Update pipeline drone-docker-harness

* Add push-only support

* Include support for PLUGIN_NO_PUSH as well

.drone.yml

@@ -12,7 +12,7 @@ platform:
 
 steps:
   - name: vet
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - go vet ./...
     environment:
@@ -22,7 +22,7 @@ steps:
         path: /go
 
   - name: test
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - go test -cover ./...
     environment:
@@ -55,7 +55,7 @@ platform:
 
 steps:
   - name: go build
-    image: golang:1.17
+    image: golang:1.23
     environment:
       CGO_ENABLED: 0
     commands:
@@ -63,6 +63,8 @@ steps:
       - go build -o release/windows/amd64/drone-ecr.exe ./cmd/drone-ecr
       - go build -o release/windows/amd64/drone-gcr.exe ./cmd/drone-gcr
       - go build -o release/windows/amd64/drone-acr.exe ./cmd/drone-acr
+      - go build -o release/windows/amd64/drone-gar.exe ./cmd/drone-gar
+
   - name: build docker plugin
     image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
     settings:
@@ -123,7 +125,21 @@ steps:
       purge: false
     when:
       event: [push, tag]
-
+  - name: build gar plugin
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
+    pull: never
+    settings:
+      dockerfile: docker/gar/Dockerfile.windows.amd64.1809
+      repo: plugins/gar
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      auto_tag: true
+      auto_tag_suffix: windows-1809-amd64
+      purge: false
+    when:
+      event: [push, tag]
 depends_on:
   - testing
 
@@ -146,7 +162,7 @@ platform:
 
 steps:
   - name: go build
-    image: golang:1.17
+    image: golang:1.23
     environment:
       CGO_ENABLED: 0
     commands:
@@ -154,8 +170,9 @@ steps:
       - go build -o release/windows/amd64/drone-ecr.exe ./cmd/drone-ecr
       - go build -o release/windows/amd64/drone-gcr.exe ./cmd/drone-gcr
       - go build -o release/windows/amd64/drone-acr.exe ./cmd/drone-acr
+      - go build -o release/windows/amd64/drone-gar.exe ./cmd/drone-gar
   - name: build docker plugin
-    image: plugins/docker
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
     settings:
       dockerfile: docker/docker/Dockerfile.windows.amd64.ltsc2022
       repo: plugins/docker
@@ -169,7 +186,7 @@ steps:
     when:
       event: [push, tag]
   - name: build ecr plugin
-    image: plugins/docker
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
     settings:
       dockerfile: docker/ecr/Dockerfile.windows.amd64.ltsc2022
       repo: plugins/ecr
@@ -183,7 +200,7 @@ steps:
     when:
       event: [push, tag]
   - name: build gcr plugin
-    image: plugins/docker
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
     settings:
       dockerfile: docker/gcr/Dockerfile.windows.amd64.ltsc2022
       repo: plugins/gcr
@@ -197,7 +214,7 @@ steps:
     when:
       event: [push, tag]
   - name: build acr plugin
-    image: plugins/docker
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
     settings:
       dockerfile: docker/acr/Dockerfile.windows.amd64.ltsc2022
       repo: plugins/acr
@@ -210,7 +227,20 @@ steps:
       purge: false
     when:
       event: [push, tag]
-
+  - name: build gar plugin
+    image: plugins/docker@sha256:f0233d950ae87ee6cb5500b2d5497fe02aa338201c0bdce2619f443fd174cfa4
+    settings:
+      dockerfile: docker/gar/Dockerfile.windows.amd64.ltsc2022
+      repo: plugins/gar
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      auto_tag: true
+      auto_tag_suffix: windows-ltsc2022-amd64
+      purge: false
+    when:
+      event: [push, tag]
 depends_on:
   - testing
 
@@ -234,7 +264,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/amd64/drone-docker ./cmd/drone-docker'
     environment:
@@ -245,7 +275,7 @@ steps:
           - tag
 
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/amd64/drone-docker ./cmd/drone-docker'
     environment:
@@ -255,7 +285,7 @@ steps:
         - tag
 
   - name: executable
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - ./release/linux/amd64/drone-docker --help
 
@@ -299,7 +329,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/arm64/drone-docker ./cmd/drone-docker'
     environment:
@@ -310,7 +340,7 @@ steps:
           - tag
 
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/arm64/drone-docker ./cmd/drone-docker'
     environment:
@@ -320,7 +350,7 @@ steps:
         - tag
 
   - name: executable
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - ./release/linux/arm64/drone-docker --help
 
@@ -399,7 +429,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/amd64/drone-gcr ./cmd/drone-gcr'
     environment:
@@ -410,7 +440,7 @@ steps:
           - tag
 
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/amd64/drone-gcr ./cmd/drone-gcr'
     environment:
@@ -444,7 +474,6 @@ trigger:
 
 depends_on:
   - linux-amd64-docker
-
 ---
 kind: pipeline
 name: linux-arm64-gcr
@@ -459,7 +488,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/arm64/drone-gcr ./cmd/drone-gcr'
     environment:
@@ -470,7 +499,7 @@ steps:
           - tag
 
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/arm64/drone-gcr ./cmd/drone-gcr'
     environment:
@@ -539,7 +568,158 @@ depends_on:
   - windows-ltsc2022
   - linux-amd64-gcr
   - linux-arm64-gcr
+---
+kind: pipeline
+name: linux-amd64-gar
+type: vm
 
+pool:
+  use: ubuntu
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: build-push
+    image: golang:1.23
+    commands:
+      - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/amd64/drone-gar ./cmd/drone-gar'
+    environment:
+      CGO_ENABLED: 0
+    when:
+      event:
+        exclude:
+          - tag
+
+  - name: build-tag
+    image: golang:1.23
+    commands:
+      - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/amd64/drone-gar ./cmd/drone-gar'
+    environment:
+      CGO_ENABLED: 0
+    when:
+      event:
+        - tag
+
+  - name: publish
+    image: plugins/docker:18
+    settings:
+      auto_tag: true
+      auto_tag_suffix: linux-amd64
+      daemon_off: false
+      dockerfile: docker/gar/Dockerfile.linux.amd64
+      password:
+        from_secret: docker_password
+      repo: plugins/gar
+      username:
+        from_secret: docker_username
+    when:
+      event:
+        exclude:
+          - pull_request
+
+trigger:
+  ref:
+    - refs/heads/master
+    - "refs/tags/**"
+    - "refs/pull/**"
+
+depends_on:
+  - linux-amd64-docker
+---
+kind: pipeline
+name: linux-arm64-gar
+type: vm
+
+pool:
+  use: ubuntu_arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+  - name: build-push
+    image: golang:1.23
+    commands:
+      - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/arm64/drone-gar ./cmd/drone-gar'
+    environment:
+      CGO_ENABLED: 0
+    when:
+      event:
+        exclude:
+          - tag
+
+  - name: build-tag
+    image: golang:1.23
+    commands:
+      - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/arm64/drone-gar ./cmd/drone-gar'
+    environment:
+      CGO_ENABLED: 0
+    when:
+      event:
+        - tag
+
+  - name: publish
+    image: plugins/docker:18
+    settings:
+      auto_tag: true
+      auto_tag_suffix: linux-arm64
+      daemon_off: false
+      dockerfile: docker/gar/Dockerfile.linux.arm64
+      password:
+        from_secret: docker_password
+      repo: plugins/gar
+      username:
+        from_secret: docker_username
+    when:
+      event:
+        exclude:
+          - pull_request
+
+trigger:
+  ref:
+    - refs/heads/master
+    - "refs/tags/**"
+    - "refs/pull/**"
+
+depends_on:
+  - linux-arm64-docker
+---
+kind: pipeline
+name: notifications-gar
+type: vm
+
+pool:
+  use: ubuntu
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: manifest
+    image: plugins/manifest
+    settings:
+      auto_tag: true
+      ignore_missing: true
+      password:
+        from_secret: docker_password
+      spec: docker/gar/manifest.tmpl
+      username:
+        from_secret: docker_username
+
+trigger:
+  ref:
+    - refs/heads/master
+    - "refs/tags/**"
+
+depends_on:
+  - windows-1809
+  - windows-ltsc2022
+  - linux-amd64-gar
+  - linux-arm64-gar
 ---
 kind: pipeline
 name: linux-amd64-ecr
@@ -554,7 +734,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/amd64/drone-ecr ./cmd/drone-ecr'
     environment:
@@ -564,7 +744,7 @@ steps:
         exclude:
           - tag
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/amd64/drone-ecr ./cmd/drone-ecr'
     environment:
@@ -612,7 +792,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/arm64/drone-ecr ./cmd/drone-ecr'
     environment:
@@ -622,7 +802,7 @@ steps:
         exclude:
           - tag
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/arm64/drone-ecr ./cmd/drone-ecr'
     environment:
@@ -705,7 +885,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/amd64/drone-heroku ./cmd/drone-heroku'
     environment:
@@ -715,7 +895,7 @@ steps:
         exclude:
           - tag
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/amd64/drone-heroku ./cmd/drone-heroku'
     environment:
@@ -764,7 +944,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_COMMIT_SHA:0:8}" -a -tags netgo -o release/linux/arm64/drone-heroku ./cmd/drone-heroku'
     environment:
@@ -774,7 +954,7 @@ steps:
         exclude:
           - tag
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v}" -a -tags netgo -o release/linux/arm64/drone-heroku ./cmd/drone-heroku'
     environment:
@@ -855,7 +1035,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/amd64/drone-acr ./cmd/drone-acr'
     environment:
@@ -865,7 +1045,7 @@ steps:
         exclude:
           - tag
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/amd64/drone-acr ./cmd/drone-acr'
     environment:
@@ -913,7 +1093,7 @@ platform:
 
 steps:
   - name: build-push
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/arm64/drone-acr ./cmd/drone-acr'
     environment:
@@ -924,7 +1104,7 @@ steps:
           - tag
 
   - name: build-tag
-    image: golang:1.17
+    image: golang:1.23
     commands:
       - 'go build -v -ldflags "-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}" -a -tags netgo -o release/linux/arm64/drone-acr ./cmd/drone-acr'
     environment:

.harness/eventPR.yaml

@@ -0,0 +1,15 @@
+inputSet:
+  name: event-PR
+  tags: {}
+  identifier: eventPR
+  orgIdentifier: default
+  projectIdentifier: Drone_Plugins
+  pipeline:
+    identifier: dronedockerharness
+    properties:
+      ci:
+        codebase:
+          build:
+            type: PR
+            spec:
+              number: <+trigger.prNumber>

.harness/eventPush.yaml

@@ -0,0 +1,15 @@
+inputSet:
+  name: event-Push
+  tags: {}
+  identifier: eventPush
+  orgIdentifier: default
+  projectIdentifier: Drone_Plugins
+  pipeline:
+    identifier: dronedockerharness
+    properties:
+      ci:
+        codebase:
+          build:
+            type: branch
+            spec:
+              branch: <+trigger.branch>

.harness/eventTag.yaml

@@ -0,0 +1,15 @@
+inputSet:
+  name: event-Tag
+  tags: {}
+  identifier: eventTag
+  orgIdentifier: default
+  projectIdentifier: Drone_Plugins
+  pipeline:
+    identifier: dronedockerharness
+    properties:
+      ci:
+        codebase:
+          build:
+            type: tag
+            spec:
+              tag: <+trigger.tag>

.harness/harness.yaml

@@ -0,0 +1,447 @@
+pipeline:
+  orgIdentifier: default
+  tags: {}
+  properties:
+    ci:
+      codebase:
+        connectorRef: GitHub_Drone_Plugins_Org
+        repoName: drone-docker
+        build: <+input>
+        sparseCheckout: []
+  stages:
+    - stage:
+        name: Test
+        identifier: Test
+        description: ""
+        type: CI
+        spec:
+          cloneCodebase: true
+          caching:
+            enabled: false
+            paths: []
+          platform:
+            os: Linux
+            arch: Amd64
+          runtime:
+            type: Cloud
+            spec: {}
+          execution:
+            steps:
+              - step:
+                  type: Run
+                  name: GO VET
+                  identifier: Run_1
+                  spec:
+                    connectorRef: Plugins_Docker_Hub_Connector
+                    image: golang:1.24.11
+                    shell: Sh
+                    command: go vet ./...
+              - step:
+                  type: Run
+                  name: GO TEST
+                  identifier: Run_2
+                  spec:
+                    connectorRef: Plugins_Docker_Hub_Connector
+                    image: golang:1.24.11
+                    shell: Sh
+                    command: go test -cover ./...
+    - parallel:
+        - stage:
+            name: linux-amd64
+            identifier: linamd64
+            description: ""
+            type: CI
+            spec:
+              cloneCodebase: true
+              caching:
+                enabled: false
+                paths: []
+              platform:
+                os: Linux
+                arch: Amd64
+              runtime:
+                type: Cloud
+                spec: {}
+              execution:
+                steps:
+                  - step:
+                      type: Run
+                      name: Build Binary
+                      identifier: Build_Push
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: golang:1.24.11
+                        shell: Sh
+                        command: go build -a -tags netgo -o release/linux/amd64/drone-<+matrix.repo> ./cmd/drone-<+matrix.repo>
+                        envVariables:
+                          CGO_ENABLED: "0"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+                  - step:
+                      type: Plugin
+                      name: Build and Push on Tag
+                      identifier: Docker_Build_and_Push
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: plugins/docker
+                        settings:
+                          username: drone
+                          password: <+secrets.getValue("Plugins_Docker_Hub_Pat")>
+                          repo: plugins/<+matrix.repo>
+                          dockerfile: docker/<+matrix.repo>/Dockerfile.linux.amd64
+                          auto_tag: "true"
+                          auto_tag_suffix: linux-amd64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "tag"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+                  - step:
+                      type: BuildAndPushDockerRegistry
+                      name: Build and Push on Branch
+                      identifier: BuildAndPushDockerRegistry_1
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        repo: plugins/<+matrix.repo>
+                        tags:
+                          - linux-amd64
+                        caching: false
+                        dockerfile: docker/<+matrix.repo>/Dockerfile.linux.amd64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "branch"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+        - stage:
+            name: linux-arm64
+            identifier: linarm64
+            description: ""
+            type: CI
+            spec:
+              cloneCodebase: true
+              caching:
+                enabled: false
+                paths: []
+              platform:
+                os: Linux
+                arch: Arm64
+              runtime:
+                type: Cloud
+                spec: {}
+              execution:
+                steps:
+                  - step:
+                      type: Run
+                      name: Build Binary
+                      identifier: buildpush
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: golang:1.24.11
+                        shell: Sh
+                        command: go build -a -tags netgo -o release/linux/arm64/drone-<+matrix.repo> ./cmd/drone-<+matrix.repo>
+                        envVariables:
+                          CGO_ENABLED: "0"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+                  - step:
+                      type: Plugin
+                      name: Build and Push on Tag
+                      identifier: Docker_Build_and_Push
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: plugins/docker
+                        settings:
+                          username: drone
+                          password: <+secrets.getValue("Plugins_Docker_Hub_Pat")>
+                          repo: plugins/<+matrix.repo>
+                          dockerfile: docker/<+matrix.repo>/Dockerfile.linux.arm64
+                          auto_tag: "true"
+                          auto_tag_suffix: linux-arm64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "tag"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+                  - step:
+                      type: BuildAndPushDockerRegistry
+                      name: Build and Push on Branch
+                      identifier: BuildAndPushDockerRegistry_1
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        repo: plugins/<+matrix.repo>
+                        tags:
+                          - linux-arm64
+                        caching: false
+                        dockerfile: docker/<+matrix.repo>/Dockerfile.linux.arm64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "branch"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - heroku
+                            - acr
+        - stage:
+            name: win-1809-amd64
+            identifier: win1809amd64
+            description: ""
+            type: CI
+            spec:
+              cloneCodebase: true
+              caching:
+                enabled: true
+              infrastructure:
+                type: VM
+                spec:
+                  type: Pool
+                  spec:
+                    poolName: windows-2019
+                    os: Windows
+              execution:
+                steps:
+                  - step:
+                      type: Run
+                      name: Build Binary
+                      identifier: go_build
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: golang:1.23.0
+                        shell: Sh
+                        command: |-
+                          # disable cgo
+                          export CGO_ENABLED=0
+
+                          go build -o release/windows/amd64/drone-<+matrix.repo>.exe ./cmd/drone-<+matrix.repo>
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+                  - step:
+                      type: Plugin
+                      name: Build and Push on Tag
+                      identifier: Docker_Build_and_Push1
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: plugins/docker
+                        settings:
+                          username: drone
+                          password: <+secrets.getValue("Plugins_Docker_Hub_Pat")>
+                          repo: plugins/<+matrix.repo>
+                          dockerfile: docker/<+matrix.repo>/Dockerfile.windows.amd64.1809
+                          auto_tag: "true"
+                          auto_tag_suffix: windows-1809-amd64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "tag"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+                  - step:
+                      type: BuildAndPushDockerRegistry
+                      name: Build and Push on Branch
+                      identifier: BuildAndPushDockerRegistry_2
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        repo: plugins/<+matrix.repo>
+                        tags:
+                          - windows-1809-amd64
+                        caching: false
+                        dockerfile: docker/<+matrix.repo>/Dockerfile.windows.amd64.1809
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "branch"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+            delegateSelectors:
+              - windows-vm
+        - stage:
+            name: win-ltsc2022-amd64
+            identifier: winamd64
+            description: ""
+            type: CI
+            spec:
+              cloneCodebase: true
+              caching:
+                enabled: false
+                paths: []
+              platform:
+                os: Windows
+                arch: Amd64
+              runtime:
+                type: Cloud
+                spec: {}
+              execution:
+                steps:
+                  - step:
+                      type: Run
+                      name: Build Binary -ltsc2022
+                      identifier: build_amd64ltsc2022
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: golang:1.23.0
+                        shell: Sh
+                        command: |-
+                          # disable cgo
+                          export CGO_ENABLED=0
+
+                          go build -o release/windows/amd64/drone-<+matrix.repo>.exe ./cmd/drone-<+matrix.repo>
+                        envVariables:
+                          CGO_ENABLED: "0"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+                  - step:
+                      type: Plugin
+                      name: Build and Push on Tag
+                      identifier: Docker_Build_and_Push1
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        image: plugins/docker
+                        settings:
+                          username: drone
+                          password: <+secrets.getValue("Plugins_Docker_Hub_Pat")>
+                          repo: plugins/<+matrix.repo>
+                          dockerfile: docker/<+matrix.repo>/Dockerfile.windows.amd64.ltsc2022
+                          auto_tag: "true"
+                          auto_tag_suffix: windows-ltsc2022-amd64
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "tag"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+                  - step:
+                      type: BuildAndPushDockerRegistry
+                      name: Build and Push on Branch
+                      identifier: BuildAndPushDockerRegistry_2
+                      spec:
+                        connectorRef: Plugins_Docker_Hub_Connector
+                        repo: plugins/<+matrix.repo>
+                        tags:
+                          - windows-ltsc2022-amd64
+                        caching: false
+                        dockerfile: docker/<+matrix.repo>/Dockerfile.windows.amd64.ltsc2022
+                      when:
+                        stageStatus: Success
+                        condition: <+codebase.build.type> == "branch"
+                      strategy:
+                        matrix:
+                          repo:
+                            - docker
+                            - gcr
+                            - gar
+                            - ecr
+                            - acr
+              buildIntelligence:
+                enabled: false
+    - stage:
+        name: Manifest and Release
+        identifier: Manifest
+        description: ""
+        type: CI
+        spec:
+          cloneCodebase: true
+          caching:
+            enabled: false
+            paths: []
+          execution:
+            steps:
+              - step:
+                  type: Plugin
+                  name: Manifest
+                  identifier: Plugin_1
+                  spec:
+                    connectorRef: Plugins_Docker_Hub_Connector
+                    image: plugins/manifest
+                    settings:
+                      username: drone
+                      password: <+secrets.getValue("Plugins_Docker_Hub_Pat")>
+                      auto_tag: "true"
+                      ignore_missing: "true"
+                      spec: docker/<+matrix.repo>/manifest.tmpl
+                  when:
+                    stageStatus: Success
+                    condition: <+codebase.build.type> == "tag"
+                  strategy:
+                    matrix:
+                      repo:
+                        - docker
+                        - gcr
+                        - gar
+                        - ecr
+                        - heroku
+                        - acr
+          platform:
+            os: Linux
+            arch: Amd64
+          runtime:
+            type: Cloud
+            spec: {}
+  identifier: dronedockerharness
+  projectIdentifier: Drone_Plugins
+  name: drone-docker-harness
+  allowStageExecutions: true

CHANGELOG.md

@@ -1,5 +1,67 @@
 # Changelog
 
+## [v20.14.5](https://github.com/drone-plugins/drone-docker/tree/v20.14.5) (2023-09-13)
+
+[Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.14.4...v20.14.5)
+
+**Implemented enhancements:**
+
+- Allow gcr authentication with workload identity [\#383](https://github.com/drone-plugins/drone-docker/pull/383) ([dhpollack](https://github.com/dhpollack))
+
+**Fixed bugs:**
+
+- \[fix\]: \[ci-9254\]: go version upgrade to 1.21 [\#401](https://github.com/drone-plugins/drone-docker/pull/401) ([abhay084](https://github.com/abhay084))
+- Revert "Add support for AAD auth for docker-acr" [\#398](https://github.com/drone-plugins/drone-docker/pull/398) ([tphoney](https://github.com/tphoney))
+
+**Closed issues:**
+
+- Remove deprecated support of label-schema in favor of OCI [\#396](https://github.com/drone-plugins/drone-docker/issues/396)
+
+**Merged pull requests:**
+
+- Add support for AAD auth for docker-acr [\#395](https://github.com/drone-plugins/drone-docker/pull/395) ([rutvijmehta-harness](https://github.com/rutvijmehta-harness))
+
+## [v20.14.4](https://github.com/drone-plugins/drone-docker/tree/v20.14.4) (2023-05-16)
+
+[Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.14.3...v20.14.4)
+
+**Fixed bugs:**
+
+- fix: Use unique build name for build and tag [\#390](https://github.com/drone-plugins/drone-docker/pull/390) ([rutvijmehta-harness](https://github.com/rutvijmehta-harness))
+
+**Merged pull requests:**
+
+- v20.14.4 prep [\#391](https://github.com/drone-plugins/drone-docker/pull/391) ([rutvijmehta-harness](https://github.com/rutvijmehta-harness))
+
+## [v20.14.3](https://github.com/drone-plugins/drone-docker/tree/v20.14.3) (2023-05-04)
+
+[Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.14.2...v20.14.3)
+
+**Merged pull requests:**
+
+- Write artifacts to input artifact file [\#389](https://github.com/drone-plugins/drone-docker/pull/389) ([raghavharness](https://github.com/raghavharness))
+
+## [v20.14.2](https://github.com/drone-plugins/drone-docker/tree/v20.14.2) (2023-04-18)
+
+[Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.14.1...v20.14.2)
+
+**Merged pull requests:**
+
+- fix windows drone yml [\#388](https://github.com/drone-plugins/drone-docker/pull/388) ([shubham149](https://github.com/shubham149))
+
+## [v20.14.1](https://github.com/drone-plugins/drone-docker/tree/v20.14.1) (2023-01-30)
+
+[Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.14.0...v20.14.1)
+
+**Implemented enhancements:**
+
+- Add option to mount host ssh agent \(--ssh\) [\#382](https://github.com/drone-plugins/drone-docker/pull/382) ([tphoney](https://github.com/tphoney))
+
+**Fixed bugs:**
+
+- windows 1809 docker build pin [\#384](https://github.com/drone-plugins/drone-docker/pull/384) ([tphoney](https://github.com/tphoney))
+- \(maint\) move to harness.drone.io [\#381](https://github.com/drone-plugins/drone-docker/pull/381) ([tphoney](https://github.com/tphoney))
+
 ## [v20.14.0](https://github.com/drone-plugins/drone-docker/tree/v20.14.0) (2022-11-17)
 
 [Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.13.0...v20.14.0)
@@ -12,6 +74,10 @@
 
 - Use full path to docker when creating card [\#373](https://github.com/drone-plugins/drone-docker/pull/373) ([donny-dont](https://github.com/donny-dont))
 
+**Merged pull requests:**
+
+- \(maint\) prep for v20.14.0 [\#377](https://github.com/drone-plugins/drone-docker/pull/377) ([tphoney](https://github.com/tphoney))
+
 ## [v20.13.0](https://github.com/drone-plugins/drone-docker/tree/v20.13.0) (2022-06-08)
 
 [Full Changelog](https://github.com/drone-plugins/drone-docker/compare/v20.12.0...v20.13.0)
@@ -94,6 +160,15 @@
 
 - Revert "Update seccomp to 20.10 docker" [\#325](https://github.com/drone-plugins/drone-docker/pull/325) ([bradrydzewski](https://github.com/bradrydzewski))
 
+**Closed issues:**
+
+- Enable auth against multiple registries [\#324](https://github.com/drone-plugins/drone-docker/issues/324)
+- Parameter add\_host not work [\#318](https://github.com/drone-plugins/drone-docker/issues/318)
+- support customized Dockerfile name ? [\#315](https://github.com/drone-plugins/drone-docker/issues/315)
+- Tag wrongly gets parsed as octal [\#311](https://github.com/drone-plugins/drone-docker/issues/311)
+- Support TLS 1.3 [\#310](https://github.com/drone-plugins/drone-docker/issues/310)
+- Can pugin-docker access workspace content directly?  [\#307](https://github.com/drone-plugins/drone-docker/issues/307)
+
 **Merged pull requests:**
 
 - \(maint\) bump git to 1.13 for build and test [\#338](https://github.com/drone-plugins/drone-docker/pull/338) ([tphoney](https://github.com/tphoney))

COSIGN_USAGE.md

@@ -0,0 +1,162 @@
+# Cosign Integration for Drone-Docker
+
+This document describes how to use the cosign container image signing feature in drone-docker.
+
+## Overview
+
+The drone-docker plugin now supports automatic container image signing using cosign after each successful push. This provides cryptographic verification that images haven't been tampered with.
+
+## Environment Variables
+
+The plugin accepts three cosign-related environment variables:
+
+### `PLUGIN_COSIGN_PRIVATE_KEY` (Required for signing)
+- **Description**: Private key for signing (PEM format content or file path)
+- **Format**: Either PEM content or file path to private key
+- **Usage**: Should be provided via secrets
+
+### `PLUGIN_COSIGN_PASSWORD` (Optional)
+- **Description**: Password for encrypted private keys
+- **Usage**: Only needed if your private key is password-protected
+
+### `PLUGIN_COSIGN_PARAMS` (Optional)
+- **Description**: Additional cosign parameters
+- **Examples**: 
+  - `-a build_id=123` (add annotations)
+  - `--tlog-upload=false` (disable transparency log)
+  - `--rekor-url=https://custom-rekor.example.com` (custom rekor instance)
+
+## Usage Examples
+
+### 1. Basic Signing (Drone)
+
+```yaml
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: docker
+  image: plugins/docker
+  settings:
+    repo: myregistry/myapp
+    tags: latest
+    cosign_private_key:
+      from_secret: cosign_private_key
+    cosign_password:
+      from_secret: cosign_password
+```
+
+### 2. Advanced Signing with Annotations (Drone)
+
+```yaml
+steps:
+- name: docker
+  image: plugins/docker
+  settings:
+    repo: myregistry/myapp
+    tags: 
+      - latest
+      - ${DRONE_BUILD_NUMBER}
+    cosign_private_key:
+      from_secret: cosign_private_key
+    cosign_params: "-a build_id=${DRONE_BUILD_NUMBER} -a commit_sha=${DRONE_COMMIT_SHA} -a branch=${DRONE_BRANCH}"
+```
+
+### 3. Harness CI/CD Usage
+
+```yaml
+- step:
+    type: Plugin
+    name: Build and Sign
+    identifier: build_and_sign
+    spec:
+      connectorRef: account.harnessImage
+      image: plugins/docker
+      settings:
+        repo: myregistry/myapp
+        tags: <+pipeline.sequenceId>
+        cosign_private_key: <+secrets.getValue("cosign_private_key")>
+        cosign_password: <+secrets.getValue("cosign_password")>
+        cosign_params: "-a harness_build=<+pipeline.sequenceId> -a harness_project=<+project.name>"
+```
+
+## Key Management
+
+### Generating Cosign Keys
+
+```bash
+# Generate a new key pair
+cosign generate-key-pair
+
+# This creates:
+# - cosign.key (private key) 
+# - cosign.pub (public key)
+```
+
+### Storing Keys Securely
+**Harness Secrets:**
+1. Go to Project Settings → Secrets
+2. Create new secret with type "File" for private key
+3. Create new secret with type "Text" for password
+
+## Security Features
+
+### Automatic Validation
+- ✅ **Private key format validation**: Ensures PEM format is correct
+- ✅ **Password requirement detection**: Warns if encrypted key needs password
+- ✅ **Keyless signing prevention**: Warns that OIDC keyless signing isn't supported
+
+### Error Handling
+- **Invalid private key**: `❌ Invalid private key format. Expected PEM format`
+- **Missing password**: `🔐 Encrypted private key requires password. Set PLUGIN_COSIGN_PASSWORD`
+- **Keyless signing**: `⚠️ WARNING: Keyless signing (OIDC) isn't supported yet in this plugin`
+
+## Signing Behavior
+
+### When Signing Occurs
+- ✅ **After each successful push**: Images are signed immediately after push
+- ✅ **Multiple tags**: Each tag gets signed individually
+- ✅ **Push-only mode**: Works with existing images
+- ✅ **Dry-run respect**: Skips signing in dry-run mode
+
+### Image References
+- **Preferred**: Signs by digest (e.g., `image@sha256:abc123...`) for security
+- **Fallback**: Signs by tag if digest unavailable
+
+### Authentication
+- **Registry auth**: Automatically uses existing Docker registry credentials
+
+## Verification
+
+To verify a signed image:
+
+```bash
+# Verify with public key
+cosign verify --key cosign.pub myregistry/myapp:latest
+
+# Verify with annotations
+cosign verify --key cosign.pub \
+  -a build_id=123 \
+  myregistry/myapp:latest
+```
+
+## Troubleshooting
+
+### Common Issues
+
+1. **"cosign: command not found"**
+   - The container image includes cosign binary
+   - Use the latest plugin image: `plugins/docker:latest`
+
+2. **"keyless signing not supported"**
+   - This plugin only supports private key signing
+   - Don't use `--oidc` or `--identity-token` in `cosign_params`
+
+3. **"encrypted private key requires password"**
+   - Set `PLUGIN_COSIGN_PASSWORD` environment variable
+   - Or use an unencrypted private key
+
+4. **Registry authentication issues**
+   - Cosign uses the same Docker registry credentials
+   - Ensure Docker login is working first

README.md

@@ -10,6 +10,14 @@
 
 Drone plugin uses Docker-in-Docker to build and publish Docker images to a container registry. For the usage information and a listing of the available options please take a look at [the docs](http://plugins.drone.io/drone-plugins/drone-docker/).
 
+### Git Leaks
+
+Run the following script to install git-leaks support to this repo.
+```
+chmod +x ./git-hooks/install.sh
+./git-hooks/install.sh
+```
+
 ## Build
 
 Build the binaries with the following commands:
@@ -25,6 +33,7 @@ go build -v -a -tags netgo -o release/linux/amd64/drone-gcr ./cmd/drone-gcr
 go build -v -a -tags netgo -o release/linux/amd64/drone-ecr ./cmd/drone-ecr
 go build -v -a -tags netgo -o release/linux/amd64/drone-acr ./cmd/drone-acr
 go build -v -a -tags netgo -o release/linux/amd64/drone-heroku ./cmd/drone-heroku
+go build -v -a -tags netgo -o release/linux/amd64/drone-gar ./cmd/drone-gar
 ```
 
 ## Docker
@@ -56,6 +65,11 @@ docker build \
   --label org.label-schema.build-date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
   --label org.label-schema.vcs-ref=$(git rev-parse --short HEAD) \
   --file docker/heroku/Dockerfile.linux.amd64 --tag plugins/heroku .
+  
+docker build \
+  --label org.label-schema.build-date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
+  --label org.label-schema.vcs-ref=$(git rev-parse --short HEAD) \
+  --file docker/gar/Dockerfile.linux.amd64 --tag plugins/gar .
 ```
 
 ## Usage
@@ -113,6 +127,44 @@ docker run --rm \
   plugins/docker --dry-run
 ```
 
+### GAR (Google Artifact Registry)
+
+```yaml
+kind: pipeline
+name: default
+type: docker
+
+steps:
+  - name: push-to-gar
+    image: plugins/gar
+    pull: never
+    settings:
+      tag: latest
+      repo: project-id/repo/image-name
+      location: us
+      json_key:
+        from_secret: gcr_json_key
+```
+
+### GAR (Google Artifact Registry) using workload identity (OIDC)
+
+```yaml
+steps:
+  - name: push-to-gar
+    image: plugins/gar
+    pull: never
+    settings:
+      tag: latest
+      repo: project-id/repo/image-name
+      location: europe
+      project_number: project-number
+      pool_id: workload identity pool id
+      provider_id: workload identity provider id
+      service_account_email: service account email
+      oidc_token_id:
+        from_secret: token 
+```
+
 ## Developer Notes
 
 - When updating the base image, you will need to update for each architecture and OS.
@@ -137,3 +189,4 @@ docker run -it --rm -v "$(pwd)":/usr/local/src/your-app githubchangeloggenerator
 ```
 
 Create your pull request for the release. Get it merged then tag the release.
+

card.go

@@ -17,8 +17,14 @@ import (
 	"github.com/inhies/go-bytesize"
 )
 
+// writeCard maintains backward compatibility by using TempTag
 func (p Plugin) writeCard() error {
-	cmd := exec.Command(dockerExe, "inspect", p.Build.Name)
+	return p.writeCardForImage(p.Build.TempTag)
+}
+
+// writeCardForImage generates card for any image reference
+func (p Plugin) writeCardForImage(imageRef string) error {
+	cmd := exec.Command(dockerExe, "inspect", imageRef)
 	data, err := cmd.CombinedOutput()
 	if err != nil {
 		return err
@@ -38,7 +44,11 @@ func (p Plugin) writeCard() error {
 	for _, tag := range inspect.RepoTags {
 		sliceTagStruct = append(sliceTagStruct, TagStruct{Tag: tag})
 	}
-	inspect.ParsedRepoTags = sliceTagStruct[1:] // remove the first tag which is always "hash:latest"
+	if len(sliceTagStruct) > 1 {
+		inspect.ParsedRepoTags = sliceTagStruct[1:] // remove the first tag which is always "hash:latest"
+	} else {
+		inspect.ParsedRepoTags = sliceTagStruct
+	}
 	// create the url from repo and registry
 	inspect.URL = mapRegistryToURL(p.Daemon.Registry, p.Build.Repo)
 	cardData, _ := json.Marshal(inspect)

cmd/drone-acr/main.go

@@ -1,15 +1,50 @@
 package main
 
 import (
+	"context"
+	"encoding/base64"
+	"encoding/json"
 	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/policy"
+	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
 	"github.com/joho/godotenv"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 
 	docker "github.com/drone-plugins/drone-docker"
+	azureutil "github.com/drone-plugins/drone-docker/internal/azure"
+)
+
+type subscriptionUrlResponse struct {
+	Value []struct {
+		ID string `json:"id"`
+	} `json:"value"`
+}
+
+const (
+	acrCertFile              = "acr-cert.pem"
+	azSubscriptionApiVersion = "2021-04-01"
+	azSubscriptionBaseUrl    = "https://management.azure.com/subscriptions/"
+	basePublicUrl            = "https://portal.azure.com/#view/Microsoft_Azure_ContainerRegistries/TagMetadataBlade/registryId/"
+	defaultUsername          = "00000000-0000-0000-0000-000000000000"
+
+	// Environment variable names for Azure Environment Credential
+	clientIdEnv        = "AZURE_CLIENT_ID"
+	clientSecretKeyEnv = "AZURE_CLIENT_SECRET"
+	tenantKeyEnv       = "AZURE_TENANT_ID"
+	certPathEnv        = "AZURE_CLIENT_CERTIFICATE_PATH"
+)
+
+var (
+	acrCertPath = filepath.Join(os.TempDir(), acrCertFile)
 )
 
 func main() {
@@ -21,8 +56,21 @@ func main() {
 	var (
 		repo     = getenv("PLUGIN_REPO")
 		registry = getenv("PLUGIN_REGISTRY")
+
+		// If these credentials are provided, they will be directly used
+		// for docker login
 		username = getenv("SERVICE_PRINCIPAL_CLIENT_ID")
 		password = getenv("SERVICE_PRINCIPAL_CLIENT_SECRET")
+
+		// Service principal credentials
+		clientId       = getenv("CLIENT_ID", "AZURE_CLIENT_ID", "AZURE_APP_ID", "PLUGIN_CLIENT_ID")
+		clientSecret   = getenv("CLIENT_SECRET", "PLUGIN_CLIENT_SECRET")
+		clientCert     = getenv("CLIENT_CERTIFICATE", "PLUGIN_CLIENT_CERTIFICATE")
+		tenantId       = getenv("TENANT_ID", "AZURE_TENANT_ID", "PLUGIN_TENANT_ID")
+		subscriptionId = getenv("SUBSCRIPTION_ID", "PLUGIN_SUBSCRIPTION_ID")
+		publicUrl      = getenv("DAEMON_REGISTRY", "PLUGIN_DAEMON_REGISTRY")
+		authorityHost  = getenv("AZURE_AUTHORITY_HOST", "PLUGIN_AZURE_AUTHORITY_HOST")
+		idToken        = getenv("PLUGIN_OIDC_TOKEN_ID")
 	)
 
 	// default registry value
@@ -30,6 +78,37 @@ func main() {
 		registry = "azurecr.io"
 	}
 
+	// Get auth if username and password is not specified
+	if username == "" && password == "" {
+		// docker login credentials are not provided
+		var err error
+		username = defaultUsername
+		if idToken != "" && clientId != "" && tenantId != "" {
+			logrus.Debug("Using OIDC authentication flow")
+			var aadToken string
+			aadToken, err = azureutil.GetAADAccessTokenViaClientAssertion(context.Background(), tenantId, clientId, idToken, authorityHost)
+			if err != nil {
+				logrus.Fatal(err)
+			}
+			var p string
+			p, err = getPublicUrl(aadToken, registry, subscriptionId)
+			if err == nil {
+				publicUrl = p
+			} else {
+				fmt.Fprintf(os.Stderr, "failed to get public url with error: %s\n", err)
+			}
+			password, err = fetchACRToken(tenantId, aadToken, registry)
+			if err != nil {
+				logrus.Fatal(err)
+			}
+		} else {
+			password, publicUrl, err = getAuth(clientId, clientSecret, clientCert, tenantId, subscriptionId, registry)
+			if err != nil {
+				logrus.Fatal(err)
+			}
+		}
+	}
+
 	// must use the fully qualified repo name. If the
 	// repo name does not have the registry prefix we
 	// should prepend.
@@ -42,6 +121,11 @@ func main() {
 	os.Setenv("DOCKER_USERNAME", username)
 	os.Setenv("DOCKER_PASSWORD", password)
 	os.Setenv("PLUGIN_REGISTRY_TYPE", "ACR")
+	if publicUrl != "" {
+		// Set this env variable if public URL for artifact is available
+		// If not, we will fall back to registry url
+		os.Setenv("ARTIFACT_REGISTRY", publicUrl)
+	}
 
 	// invoke the base docker plugin binary
 	cmd := exec.Command(docker.GetDroneDockerExecCmd())
@@ -53,6 +137,157 @@ func main() {
 	}
 }
 
+func getAuth(clientId, clientSecret, clientCert, tenantId, subscriptionId, registry string) (string, string, error) {
+	// Verify inputs
+	if tenantId == "" {
+		return "", "", fmt.Errorf("tenantId cannot be empty for AAD authentication")
+	}
+	if clientId == "" {
+		return "", "", fmt.Errorf("clientId cannot be empty for AAD authentication")
+	}
+	if clientSecret == "" && clientCert == "" {
+		return "", "", fmt.Errorf("one of client secret or client cert should be defined")
+	}
+
+	// Setup cert
+	if clientCert != "" {
+		err := setupACRCert(clientCert, acrCertPath)
+		if err != nil {
+			errors.Wrap(err, "failed to push setup cert file")
+		}
+	}
+
+	// Get AZ env
+	if err := os.Setenv(clientIdEnv, clientId); err != nil {
+		return "", "", errors.Wrap(err, "failed to set env variable client Id")
+	}
+	if err := os.Setenv(clientSecretKeyEnv, clientSecret); err != nil {
+		return "", "", errors.Wrap(err, "failed to set env variable client secret")
+	}
+	if err := os.Setenv(tenantKeyEnv, tenantId); err != nil {
+		return "", "", errors.Wrap(err, "failed to set env variable tenant Id")
+	}
+	if err := os.Setenv(certPathEnv, acrCertPath); err != nil {
+		return "", "", errors.Wrap(err, "failed to set env variable cert path")
+	}
+	env, err := azidentity.NewEnvironmentCredential(nil)
+	if err != nil {
+		return "", "", errors.Wrap(err, "failed to get env credentials from azure")
+	}
+	os.Unsetenv(clientIdEnv)
+	os.Unsetenv(clientSecretKeyEnv)
+	os.Unsetenv(tenantKeyEnv)
+	os.Unsetenv(certPathEnv)
+
+	// Fetch AAD token
+	policy := policy.TokenRequestOptions{
+		Scopes: []string{"https://management.azure.com/.default"},
+	}
+	aadToken, err := env.GetToken(context.Background(), policy)
+	if err != nil {
+		return "", "", errors.Wrap(err, "failed to fetch access token")
+	}
+
+	// Get public URL for artifacts
+	publicUrl, err := getPublicUrl(aadToken.Token, registry, subscriptionId)
+	if err != nil {
+		// execution should not fail because of this error
+		fmt.Fprintf(os.Stderr, "failed to get public url with error: %s\n", err)
+	}
+
+	// Fetch token
+	ACRToken, err := fetchACRToken(tenantId, aadToken.Token, registry)
+	if err != nil {
+		return "", "", errors.Wrap(err, "failed to fetch ACR token")
+	}
+	return ACRToken, publicUrl, nil
+}
+
+func fetchACRToken(tenantId, token, registry string) (string, error) {
+	// oauth exchange
+	formData := url.Values{
+		"grant_type":   {"access_token"},
+		"service":      {registry},
+		"tenant":       {tenantId},
+		"access_token": {token},
+	}
+	jsonResponse, err := http.PostForm(fmt.Sprintf("https://%s/oauth2/exchange", registry), formData)
+	if err != nil || jsonResponse == nil {
+		return "", errors.Wrap(err, "failed to fetch ACR token")
+	}
+
+	// fetch token from response
+	var response map[string]interface{}
+	err = json.NewDecoder(jsonResponse.Body).Decode(&response)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to decode oauth exchange response")
+	}
+
+	// Parse the refresh_token from the response
+	if t, found := response["refresh_token"]; found {
+		if refreshToken, ok := t.(string); ok {
+			return refreshToken, nil
+		}
+		return "", errors.New("failed to cast refresh token from acr")
+	}
+	return "", errors.Wrap(err, "refresh token not found in response of oauth exchange call")
+}
+
+func setupACRCert(cert, certPath string) error {
+	decoded, err := base64.StdEncoding.DecodeString(cert)
+	if err != nil {
+		return errors.Wrap(err, "failed to base64 decode ACR certificate")
+	}
+	err = ioutil.WriteFile(certPath, decoded, 0644)
+	if err != nil {
+		return errors.Wrap(err, "failed to write ACR certificate")
+	}
+	return nil
+}
+
+func getPublicUrl(token, registryUrl, subscriptionId string) (string, error) {
+	if len(subscriptionId) == 0 || registryUrl == "" {
+		return "", nil
+	}
+
+	registry := strings.Split(registryUrl, ".")[0]
+	filter := fmt.Sprintf("resourceType eq 'Microsoft.ContainerRegistry/registries' and name eq '%s'", registry)
+	params := url.Values{}
+	params.Add("$filter", filter)
+	params.Add("api-version", azSubscriptionApiVersion)
+	params.Add("$select", "id")
+	url := azSubscriptionBaseUrl + subscriptionId + "/resources?" + params.Encode()
+
+	client := &http.Client{}
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		fmt.Println(err)
+		return "", errors.Wrap(err, "failed to create request for getting container registry setting")
+	}
+
+	req.Header.Add("Authorization", "Bearer "+token)
+	res, err := client.Do(req)
+	if err != nil {
+		fmt.Println(err)
+		return "", errors.Wrap(err, "failed to send request for getting container registry setting")
+	}
+	defer res.Body.Close()
+
+	var response subscriptionUrlResponse
+	err = json.NewDecoder(res.Body).Decode(&response)
+	if err != nil {
+		return "", errors.Wrap(err, "failed to send request for getting container registry setting")
+	}
+	if len(response.Value) == 0 {
+		return "", errors.New("no id present for base url")
+	}
+	return basePublicUrl + encodeParam(response.Value[0].ID), nil
+}
+
+func encodeParam(s string) string {
+	return url.QueryEscape(s)
+}
+
 func getenv(key ...string) (s string) {
 	for _, k := range key {
 		s = os.Getenv(k)

cmd/drone-acr/main_test.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+    "os"
+    "testing"
+)
+
+func TestGetAuthInputValidation(t *testing.T) {
+    // missing tenant
+    if _, _, err := getAuth("client", "secret", "", "", "sub", "registry.azurecr.io"); err == nil {
+        t.Fatalf("expected error for missing tenantId")
+    }
+    // missing clientId
+    if _, _, err := getAuth("", "secret", "", "tenant", "sub", "registry.azurecr.io"); err == nil {
+        t.Fatalf("expected error for missing clientId")
+    }
+    // missing both secret and cert
+    if _, _, err := getAuth("client", "", "", "tenant", "sub", "registry.azurecr.io"); err == nil {
+        t.Fatalf("expected error for missing credentials")
+    }
+}
+
+func TestGetenvAuthorityHost(t *testing.T) {
+    os.Setenv("AZURE_AUTHORITY_HOST", "https://login.microsoftonline.us")
+    defer os.Unsetenv("AZURE_AUTHORITY_HOST")
+
+    got := getenv("AZURE_AUTHORITY_HOST")
+    if got != "https://login.microsoftonline.us" {
+        t.Fatalf("expected AZURE_AUTHORITY_HOST to be returned, got %q", got)
+    }
+}
+

cmd/drone-docker/custom_string_slice.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"strings"
+)
+
+// CustomStringSliceFlag is like a regular StringSlice flag but with
+// semicolon as a delimiter
+type CustomStringSliceFlag struct {
+	Value []string
+}
+
+func (f *CustomStringSliceFlag) GetValue() []string {
+	if f.Value == nil {
+		return make([]string, 0)
+	}
+	return f.Value
+}
+
+func (f *CustomStringSliceFlag) String() string {
+	if f.Value == nil {
+		return ""
+	}
+	return strings.Join(f.Value, ";")
+}
+
+func (f *CustomStringSliceFlag) Set(v string) error {
+	for _, s := range strings.Split(v, ";") {
+		s = strings.TrimSpace(s)
+		f.Value = append(f.Value, s)
+	}
+	return nil
+}

cmd/drone-docker/main.go

@@ -3,7 +3,9 @@ package main
 import (
 	"os"
 	"runtime"
+	"strings"
 
+	"github.com/dchest/uniuri"
 	"github.com/joho/godotenv"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
@@ -31,7 +33,7 @@ func main() {
 		cli.BoolFlag{
 			Name:   "dry-run",
 			Usage:  "dry run disables docker push",
-			EnvVar: "PLUGIN_DRY_RUN",
+			EnvVar: "PLUGIN_DRY_RUN, PLUGIN_NO_PUSH",
 		},
 		cli.StringFlag{
 			Name:   "remote.url",
@@ -149,6 +151,17 @@ func main() {
 			Usage:  "build args",
 			EnvVar: "PLUGIN_BUILD_ARGS_FROM_ENV",
 		},
+		cli.GenericFlag{
+			Name:   "args-new",
+			Usage:  "build args new",
+			EnvVar: "PLUGIN_BUILD_ARGS_NEW",
+			Value:  new(CustomStringSliceFlag),
+		},
+		cli.BoolFlag{
+			Name:   "plugin-multiple-build-agrs",
+			Usage:  "plugin multiple build agrs",
+			EnvVar: "PLUGIN_MULTIPLE_BUILD_ARGS",
+		},
 		cli.BoolFlag{
 			Name:   "quiet",
 			Usage:  "quiet docker build",
@@ -220,6 +233,21 @@ func main() {
 			Usage:  "docker password",
 			EnvVar: "PLUGIN_PASSWORD,DOCKER_PASSWORD",
 		},
+		cli.StringFlag{
+			Name:   "docker.baseimageusername",
+			Usage:  "Docker username for base image registry",
+			EnvVar: "PLUGIN_DOCKER_USERNAME,PLUGIN_BASE_IMAGE_USERNAME,DOCKER_BASE_IMAGE_USERNAME",
+		},
+		cli.StringFlag{
+			Name:   "docker.baseimagepassword",
+			Usage:  "Docker password for base image registry",
+			EnvVar: "PLUGIN_DOCKER_PASSWORD,PLUGIN_BASE_IMAGE_PASSWORD,DOCKER_BASE_IMAGE_PASSWORD",
+		},
+		cli.StringFlag{
+			Name:   "docker.baseimageregistry",
+			Usage:  "Docker registry for base image registry",
+			EnvVar: "PLUGIN_DOCKER_REGISTRY,PLUGIN_BASE_IMAGE_REGISTRY,DOCKER_BASE_IMAGE_REGISTRY",
+		},
 		cli.StringFlag{
 			Name:   "docker.email",
 			Usage:  "docker email",
@@ -290,6 +318,37 @@ func main() {
 			Usage:  "registry type",
 			EnvVar: "PLUGIN_REGISTRY_TYPE",
 		},
+		cli.StringFlag{
+			Name:   "access-token",
+			Usage:  "access token",
+			EnvVar: "ACCESS_TOKEN",
+		},
+		// Cosign signing configuration
+		cli.StringFlag{
+			Name:   "cosign.private-key",
+			Usage:  "cosign private key content or file path for signing",
+			EnvVar: "PLUGIN_COSIGN_PRIVATE_KEY",
+		},
+		cli.StringFlag{
+			Name:   "cosign.password",
+			Usage:  "password for encrypted cosign private key",
+			EnvVar: "PLUGIN_COSIGN_PASSWORD",
+		},
+		cli.StringFlag{
+			Name:   "cosign.params",
+			Usage:  "additional cosign parameters (e.g., annotations, flags)",
+			EnvVar: "PLUGIN_COSIGN_PARAMS",
+		},
+		cli.BoolFlag{
+			Name:   "push-only",
+			Usage:  "skip build and only push images",
+			EnvVar: "PLUGIN_PUSH_ONLY",
+		},
+		cli.StringFlag{
+			Name:   "source-image",
+			Usage:  "source image to tag and push (format: repo:tag)",
+			EnvVar: "PLUGIN_SOURCE_IMAGE",
+		},
 	}
 
 	if err := app.Run(os.Args); err != nil {
@@ -307,40 +366,44 @@ func run(c *cli.Context) error {
 		Dryrun:  c.Bool("dry-run"),
 		Cleanup: c.BoolT("docker.purge"),
 		Login: docker.Login{
-			Registry: c.String("docker.registry"),
+			Registry:    c.String("docker.registry"),
-			Username: c.String("docker.username"),
+			Username:    c.String("docker.username"),
-			Password: c.String("docker.password"),
+			Password:    c.String("docker.password"),
-			Email:    c.String("docker.email"),
+			Email:       c.String("docker.email"),
-			Config:   c.String("docker.config"),
+			Config:      c.String("docker.config"),
+			AccessToken: c.String("access-token"),
 		},
 		CardPath:     c.String("drone-card-path"),
 		ArtifactFile: c.String("artifact-file"),
 		Build: docker.Build{
-			Remote:      c.String("remote.url"),
+			Remote:              c.String("remote.url"),
-			Name:        c.String("commit.sha"),
+			Name:                c.String("commit.sha"),
-			Dockerfile:  c.String("dockerfile"),
+			TempTag:             generateTempTag(),
-			Context:     c.String("context"),
+			Dockerfile:          c.String("dockerfile"),
-			Tags:        c.StringSlice("tags"),
+			Context:             c.String("context"),
-			Args:        c.StringSlice("args"),
+			Tags:                c.StringSlice("tags"),
-			ArgsEnv:     c.StringSlice("args-from-env"),
+			Args:                c.StringSlice("args"),
-			Target:      c.String("target"),
+			ArgsEnv:             c.StringSlice("args-from-env"),
-			Squash:      c.Bool("squash"),
+			ArgsNew:             c.Generic("args-new").(*CustomStringSliceFlag).GetValue(),
-			Pull:        c.BoolT("pull-image"),
+			IsMultipleBuildArgs: c.Bool("plugin-multiple-build-agrs"),
-			CacheFrom:   c.StringSlice("cache-from"),
+			Target:              c.String("target"),
-			Compress:    c.Bool("compress"),
+			Squash:              c.Bool("squash"),
-			Repo:        c.String("repo"),
+			Pull:                c.BoolT("pull-image"),
-			Labels:      c.StringSlice("custom-labels"),
+			CacheFrom:           c.StringSlice("cache-from"),
-			LabelSchema: c.StringSlice("label-schema"),
+			Compress:            c.Bool("compress"),
-			AutoLabel:   c.BoolT("auto-label"),
+			Repo:                c.String("repo"),
-			Link:        c.String("link"),
+			Labels:              c.StringSlice("custom-labels"),
-			NoCache:     c.Bool("no-cache"),
+			LabelSchema:         c.StringSlice("label-schema"),
-			Secret:      c.String("secret"),
+			AutoLabel:           c.BoolT("auto-label"),
-			SecretEnvs:  c.StringSlice("secrets-from-env"),
+			Link:                c.String("link"),
-			SecretFiles: c.StringSlice("secrets-from-file"),
+			NoCache:             c.Bool("no-cache"),
-			AddHost:     c.StringSlice("add-host"),
+			Secret:              c.String("secret"),
-			Quiet:       c.Bool("quiet"),
+			SecretEnvs:          c.StringSlice("secrets-from-env"),
-			Platform:    c.String("platform"),
+			SecretFiles:         c.StringSlice("secrets-from-file"),
-			SSHAgentKey: c.String("ssh-agent-key"),
+			AddHost:             c.StringSlice("add-host"),
+			Quiet:               c.Bool("quiet"),
+			Platform:            c.String("platform"),
+			SSHAgentKey:         c.String("ssh-agent-key"),
 		},
 		Daemon: docker.Daemon{
 			Registry:      c.String("docker.registry"),
@@ -358,6 +421,16 @@ func run(c *cli.Context) error {
 			Experimental:  c.Bool("daemon.experimental"),
 			RegistryType:  registryType,
 		},
+		BaseImageRegistry: c.String("docker.baseimageregistry"),
+		BaseImageUsername: c.String("docker.baseimageusername"),
+		BaseImagePassword: c.String("docker.baseimagepassword"),
+		Cosign: docker.CosignConfig{
+			PrivateKey: c.String("cosign.private-key"),
+			Password:   c.String("cosign.password"),
+			Params:     c.String("cosign.params"),
+		},
+		PushOnly:    c.Bool("push-only"),
+		SourceImage: c.String("source-image"),
 	}
 
 	if c.Bool("tags.auto") {
@@ -383,6 +456,10 @@ func run(c *cli.Context) error {
 	return plugin.Exec()
 }
 
+func generateTempTag() string {
+	return strings.ToLower(uniuri.New())
+}
+
 func GetExecCmd() string {
 	if runtime.GOOS == "windows" {
 		return "C:/bin/drone-docker.exe"

cmd/drone-ecr/main.go

@@ -22,6 +22,10 @@ import (
 	docker "github.com/drone-plugins/drone-docker"
 )
 
+type ecrAPI interface {
+	DescribeImages(*ecr.DescribeImagesInput) (*ecr.DescribeImagesOutput, error)
+}
+
 const defaultRegion = "us-east-1"
 
 func main() {
@@ -31,17 +35,19 @@ func main() {
 	}
 
 	var (
-		repo             = getenv("PLUGIN_REPO")
+		repo                = getenv("PLUGIN_REPO")
-		registry         = getenv("PLUGIN_REGISTRY")
+		registry            = getenv("PLUGIN_REGISTRY")
-		region           = getenv("PLUGIN_REGION", "ECR_REGION", "AWS_REGION")
+		region              = getenv("PLUGIN_REGION", "ECR_REGION", "AWS_REGION")
-		key              = getenv("PLUGIN_ACCESS_KEY", "ECR_ACCESS_KEY", "AWS_ACCESS_KEY_ID")
+		key                 = getenv("PLUGIN_ACCESS_KEY", "ECR_ACCESS_KEY", "AWS_ACCESS_KEY_ID")
-		secret           = getenv("PLUGIN_SECRET_KEY", "ECR_SECRET_KEY", "AWS_SECRET_ACCESS_KEY")
+		secret              = getenv("PLUGIN_SECRET_KEY", "ECR_SECRET_KEY", "AWS_SECRET_ACCESS_KEY")
-		create           = parseBoolOrDefault(false, getenv("PLUGIN_CREATE_REPOSITORY", "ECR_CREATE_REPOSITORY"))
+		create              = parseBoolOrDefault(false, getenv("PLUGIN_CREATE_REPOSITORY", "ECR_CREATE_REPOSITORY"))
-		lifecyclePolicy  = getenv("PLUGIN_LIFECYCLE_POLICY")
+		lifecyclePolicy     = getenv("PLUGIN_LIFECYCLE_POLICY")
-		repositoryPolicy = getenv("PLUGIN_REPOSITORY_POLICY")
+		repositoryPolicy    = getenv("PLUGIN_REPOSITORY_POLICY")
-		assumeRole       = getenv("PLUGIN_ASSUME_ROLE")
+		assumeRole          = getenv("PLUGIN_ASSUME_ROLE")
-		externalId       = getenv("PLUGIN_EXTERNAL_ID")
+		externalId          = getenv("PLUGIN_EXTERNAL_ID")
-		scanOnPush       = parseBoolOrDefault(false, getenv("PLUGIN_SCAN_ON_PUSH"))
+		scanOnPush          = parseBoolOrDefault(false, getenv("PLUGIN_SCAN_ON_PUSH"))
+		idToken             = os.Getenv("PLUGIN_OIDC_TOKEN_ID")
+		skipPushIfTagExists = parseBoolOrDefault(false, getenv("PLUGIN_SKIP_PUSH_IF_TAG_EXISTS"))
 	)
 
 	// set the region
@@ -61,7 +67,7 @@ func main() {
 		log.Fatal(fmt.Sprintf("error creating aws session: %v", err))
 	}
 
-	svc := getECRClient(sess, assumeRole, externalId)
+	svc := getECRClient(sess, assumeRole, externalId, idToken)
 	username, password, defaultRegistry, err := getAuthInfo(svc)
 
 	if registry == "" {
@@ -113,6 +119,34 @@ func main() {
 	os.Setenv("DOCKER_PASSWORD", password)
 	os.Setenv("PLUGIN_REGISTRY_TYPE", "ECR")
 
+	// Skip if tag already exits for both mutable and immutable repos
+	if skipPushIfTagExists {
+		tagInput := getenv("PLUGIN_TAG", "PLUGIN_TAGS")
+		var tags []string
+		if tagInput == "" {
+			tags = []string{"latest"}
+		} else {
+			for _, t := range strings.Split(tagInput, ",") {
+				trimmed := strings.TrimSpace(t)
+				if trimmed != "" {
+					tags = append(tags, trimmed)
+				}
+			}
+		}
+
+		repositoryName := trimHostname(repo, registry)
+		for _, t := range tags {
+			exists, err := tagExists(svc, repositoryName, t)
+			if err != nil {
+				logrus.Fatalf("Error checking if image exists for tag %s: %v", t, err)
+			}
+			if exists {
+				logrus.Infof("%s:%s: Image tag exists. Skipping push.", repo, t)
+				os.Exit(0)
+			}
+		}
+	}
+
 	// invoke the base docker plugin binary
 	cmd := exec.Command(docker.GetDroneDockerExecCmd())
 	cmd.Stdout = os.Stdout
@@ -197,7 +231,7 @@ func parseBoolOrDefault(defaultValue bool, s string) (result bool) {
 	var err error
 	result, err = strconv.ParseBool(s)
 	if err != nil {
-		result = false
+		result = defaultValue
 	}
 
 	return
@@ -213,11 +247,30 @@ func getenv(key ...string) (s string) {
 	return
 }
 
-func getECRClient(sess *session.Session, role string, externalId string) *ecr.ECR {
+func getECRClient(sess *session.Session, role string, externalId string, idToken string) *ecr.ECR {
 	if role == "" {
 		return ecr.New(sess)
 	}
-	if externalId != "" {
+
+	if idToken != "" {
+		tempFile, err := os.CreateTemp("/tmp", "idToken-*.jwt")
+		if err != nil {
+			log.Fatalf("Failed to create temporary file: %v", err)
+		}
+		defer tempFile.Close()
+
+		if err := os.Chmod(tempFile.Name(), 0600); err != nil {
+			log.Fatalf("Failed to set file permissions: %v", err)
+		}
+
+		if _, err := tempFile.WriteString(idToken); err != nil {
+			log.Fatalf("Failed to write ID token to temporary file: %v", err)
+		}
+
+		// Create credentials using the path to the ID token file
+		creds := stscreds.NewWebIdentityCredentials(sess, role, "", tempFile.Name())
+		return ecr.New(sess, &aws.Config{Credentials: creds})
+	} else if externalId != "" {
 		return ecr.New(sess, &aws.Config{
 			Credentials: stscreds.NewCredentials(sess, role, func(p *stscreds.AssumeRoleProvider) {
 				p.ExternalID = &externalId
@@ -229,3 +282,20 @@ func getECRClient(sess *session.Session, role string, externalId string) *ecr.EC
 		})
 	}
 }
+
+func tagExists(svc ecrAPI, repository, tag string) (bool, error) {
+	input := &ecr.DescribeImagesInput{
+		RepositoryName: aws.String(repository),
+		ImageIds: []*ecr.ImageIdentifier{
+			{ImageTag: aws.String(tag)},
+		},
+	}
+	output, err := svc.DescribeImages(input)
+	if err != nil {
+		if aerr, ok := err.(awserr.Error); ok && aerr.Code() == "ImageNotFoundException" {
+			return false, nil
+		}
+		return false, err
+	}
+	return len(output.ImageDetails) > 0, nil
+}

cmd/drone-gar/main.go

@@ -0,0 +1,165 @@
+package main
+
+import (
+	"context"
+	"encoding/base64"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"strconv"
+	"strings"
+
+	docker "github.com/drone-plugins/drone-docker"
+	"github.com/drone-plugins/drone-docker/internal/gcp"
+
+	"github.com/joho/godotenv"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+)
+
+type Config struct {
+	Repo             string
+	Registry         string
+	Password         string
+	WorkloadIdentity bool
+	Username         string
+	AccessToken      string
+}
+
+type staticTokenSource struct {
+	token *oauth2.Token
+}
+
+func (s *staticTokenSource) Token() (*oauth2.Token, error) {
+	return s.token, nil
+}
+
+func loadConfig() Config {
+	// Default username
+	username := "_json_key"
+	var config Config
+
+	// Load env-file if it exists
+	if env := os.Getenv("PLUGIN_ENV_FILE"); env != "" {
+		if err := godotenv.Load(env); err != nil {
+			log.Fatalf("Error loading .env file: %v", err)
+		}
+	}
+
+	idToken := getenv("PLUGIN_OIDC_TOKEN_ID")
+	projectId := getenv("PLUGIN_PROJECT_NUMBER")
+	poolId := getenv("PLUGIN_POOL_ID")
+	providerId := getenv("PLUGIN_PROVIDER_ID")
+	serviceAccountEmail := getenv("PLUGIN_SERVICE_ACCOUNT_EMAIL")
+
+	if idToken != "" && projectId != "" && poolId != "" && providerId != "" && serviceAccountEmail != "" {
+		federalToken, err := gcp.GetFederalToken(idToken, projectId, poolId, providerId)
+		if err != nil {
+			logrus.Fatalf("Error (getFederalToken): %s", err)
+		}
+		accessToken, err := gcp.GetGoogleCloudAccessToken(federalToken, serviceAccountEmail)
+		if err != nil {
+			logrus.Fatalf("Error (getGoogleCloudAccessToken): %s", err)
+		}
+		config.AccessToken = accessToken
+	} else {
+		password := getenv(
+			"PLUGIN_JSON_KEY",
+			"GCR_JSON_KEY",
+			"GOOGLE_CREDENTIALS",
+			"TOKEN",
+		)
+		config.WorkloadIdentity = parseBoolOrDefault(false, getenv("PLUGIN_WORKLOAD_IDENTITY"))
+		config.Username, config.Password = setUsernameAndPassword(username, password, config.WorkloadIdentity)
+	}
+
+	location := getenv("PLUGIN_LOCATION")
+	repo := getenv("PLUGIN_REPO")
+
+	registry := getenv("PLUGIN_REGISTRY")
+	if registry == "" {
+		registry = fmt.Sprintf("%s-docker.pkg.dev", location)
+	}
+
+	if !strings.HasPrefix(repo, registry) {
+		repo = path.Join(registry, repo)
+	}
+	config.Repo = repo
+	config.Registry = registry
+	return config
+}
+
+func main() {
+	config := loadConfig()
+	if config.AccessToken != "" {
+		os.Setenv("ACCESS_TOKEN", config.AccessToken)
+	} else if config.Username != "" && config.Password != "" {
+		os.Setenv("DOCKER_USERNAME", config.Username)
+		os.Setenv("DOCKER_PASSWORD", config.Password)
+	}
+
+	os.Setenv("PLUGIN_REPO", config.Repo)
+	os.Setenv("PLUGIN_REGISTRY", config.Registry)
+
+	// invoke the base docker plugin binary
+	cmd := exec.Command(docker.GetDroneDockerExecCmd())
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	err := cmd.Run()
+	if err != nil {
+		logrus.Fatal(err)
+	}
+}
+
+func getOauthToken(data []byte) (s string) {
+	scopes := []string{
+		"https://www.googleapis.com/auth/cloud-platform",
+	}
+	ctx := context.Background()
+	credentials, err := google.CredentialsFromJSON(ctx, data, scopes...)
+	if err == nil {
+		token, err := credentials.TokenSource.Token()
+		if err == nil {
+			return token.AccessToken
+		}
+	}
+	return
+}
+
+func setUsernameAndPassword(user string, pass string, workloadIdentity bool) (u string, p string) {
+	// decode the token if base64 encoded
+	decoded, err := base64.StdEncoding.DecodeString(pass)
+	if err == nil {
+		pass = string(decoded)
+	}
+	// get oauth token and set username if using workload identity
+	if workloadIdentity {
+		data := []byte(pass)
+		pass = getOauthToken(data)
+		user = "oauth2accesstoken"
+	}
+	return user, pass
+}
+
+func parseBoolOrDefault(defaultValue bool, s string) (result bool) {
+	var err error
+	result, err = strconv.ParseBool(s)
+	if err != nil {
+		result = defaultValue
+	}
+
+	return
+}
+
+func getenv(key ...string) (s string) {
+	for _, k := range key {
+		s = os.Getenv(k)
+		if s != "" {
+			return
+		}
+	}
+	return
+}

cmd/drone-gcr/main.go

@@ -1,72 +1,152 @@
 package main
 
 import (
+	"context"
 	"encoding/base64"
+	"log"
 	"os"
 	"os/exec"
 	"path"
+	"strconv"
 	"strings"
 
+	docker "github.com/drone-plugins/drone-docker"
+	"github.com/drone-plugins/drone-docker/internal/gcp"
+
 	"github.com/joho/godotenv"
 	"github.com/sirupsen/logrus"
-
+	"golang.org/x/oauth2/google"
-	docker "github.com/drone-plugins/drone-docker"
 )
 
-// gcr default username
+type Config struct {
-const username = "_json_key"
+	Repo             string
+	Registry         string
+	Password         string
+	WorkloadIdentity bool
+	Username         string
+	AccessToken      string
+}
 
-func main() {
+func loadConfig() Config {
-	// Load env-file if it exists first
+	// Default username
+	username := "_json_key"
+	var config Config
+
+	// Load env-file if it exists
 	if env := os.Getenv("PLUGIN_ENV_FILE"); env != "" {
-		godotenv.Load(env)
+		if err := godotenv.Load(env); err != nil {
+			log.Fatalf("Error loading .env file: %v", err)
+		}
 	}
 
-	var (
+	idToken := getenv("PLUGIN_OIDC_TOKEN_ID")
-		repo     = getenv("PLUGIN_REPO")
+	projectId := getenv("PLUGIN_PROJECT_NUMBER")
-		registry = getenv("PLUGIN_REGISTRY")
+	poolId := getenv("PLUGIN_POOL_ID")
-		password = getenv(
+	providerId := getenv("PLUGIN_PROVIDER_ID")
+	serviceAccountEmail := getenv("PLUGIN_SERVICE_ACCOUNT_EMAIL")
+
+	if idToken != "" && projectId != "" && poolId != "" && providerId != "" && serviceAccountEmail != "" {
+		federalToken, err := gcp.GetFederalToken(idToken, projectId, poolId, providerId)
+		if err != nil {
+			logrus.Fatalf("Error (getFederalToken): %s", err)
+		}
+		accessToken, err := gcp.GetGoogleCloudAccessToken(federalToken, serviceAccountEmail)
+		if err != nil {
+			logrus.Fatalf("Error (getGoogleCloudAccessToken): %s", err)
+		}
+		config.AccessToken = accessToken
+	} else {
+		password := getenv(
 			"PLUGIN_JSON_KEY",
 			"GCR_JSON_KEY",
 			"GOOGLE_CREDENTIALS",
 			"TOKEN",
 		)
-	)
+		config.WorkloadIdentity = parseBoolOrDefault(false, getenv("PLUGIN_WORKLOAD_IDENTITY"))
-
+		config.Username, config.Password = setUsernameAndPassword(username, password, config.WorkloadIdentity)
-	// decode the token if base64 encoded
-	decoded, err := base64.StdEncoding.DecodeString(password)
-	if err == nil {
-		password = string(decoded)
 	}
 
-	// default registry value
+	repo := getenv("PLUGIN_REPO")
+	registryType := getenv("PLUGIN_REGISTRY_TYPE")
+	if registryType == "" {
+		registryType = "GCR"
+	}
+
+	registry := getenv("PLUGIN_REGISTRY")
 	if registry == "" {
 		registry = "gcr.io"
 	}
 
-	// must use the fully qualified repo name. If the
-	// repo name does not have the registry prefix we
-	// should prepend.
 	if !strings.HasPrefix(repo, registry) {
 		repo = path.Join(registry, repo)
 	}
+	config.Repo = repo
+	config.Registry = registry
+	return config
+}
 
-	os.Setenv("PLUGIN_REPO", repo)
+func main() {
-	os.Setenv("PLUGIN_REGISTRY", registry)
+	config := loadConfig()
-	os.Setenv("DOCKER_USERNAME", username)
+	if config.AccessToken != "" {
-	os.Setenv("DOCKER_PASSWORD", password)
+		os.Setenv("ACCESS_TOKEN", config.AccessToken)
-	os.Setenv("PLUGIN_REGISTRY_TYPE", "GCR")
+	} else if config.Username != "" && config.Password != "" {
+		os.Setenv("DOCKER_USERNAME", config.Username)
+		os.Setenv("DOCKER_PASSWORD", config.Password)
+	}
+
+	os.Setenv("PLUGIN_REPO", config.Repo)
+	os.Setenv("PLUGIN_REGISTRY", config.Registry)
 
 	// invoke the base docker plugin binary
 	cmd := exec.Command(docker.GetDroneDockerExecCmd())
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
-	err = cmd.Run()
+	err := cmd.Run()
 	if err != nil {
 		logrus.Fatal(err)
 	}
 }
 
+func getOauthToken(data []byte) (s string) {
+	scopes := []string{
+		"https://www.googleapis.com/auth/cloud-platform",
+	}
+	ctx := context.Background()
+	credentials, err := google.CredentialsFromJSON(ctx, data, scopes...)
+	if err == nil {
+		token, err := credentials.TokenSource.Token()
+		if err == nil {
+			return token.AccessToken
+		}
+	}
+	return
+}
+
+func setUsernameAndPassword(user string, pass string, workloadIdentity bool) (u string, p string) {
+	// decode the token if base64 encoded
+	decoded, err := base64.StdEncoding.DecodeString(pass)
+	if err == nil {
+		pass = string(decoded)
+	}
+	// get oauth token and set username if using workload identity
+	if workloadIdentity {
+		data := []byte(pass)
+		pass = getOauthToken(data)
+		user = "oauth2accesstoken"
+	}
+	return user, pass
+}
+
+func parseBoolOrDefault(defaultValue bool, s string) (result bool) {
+	var err error
+	result, err = strconv.ParseBool(s)
+	if err != nil {
+		result = defaultValue
+	}
+
+	return
+}
+
 func getenv(key ...string) (s string) {
 	for _, k := range key {
 		s = os.Getenv(k)

daemon.go

@@ -11,6 +11,7 @@ import (
 const dockerExe = "/usr/local/bin/docker"
 const dockerdExe = "/usr/local/bin/dockerd"
 const dockerHome = "/root/.docker/"
+const cosignExe = "/usr/local/bin/cosign"
 
 func (p Plugin) startDaemon() {
 	cmd := commandDaemon(p.Daemon)

daemon_win.go

@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package docker
@@ -5,6 +6,7 @@ package docker
 const dockerExe = "C:\\bin\\docker.exe"
 const dockerdExe = ""
 const dockerHome = "C:\\ProgramData\\docker\\"
+const cosignExe = "C:\\bin\\cosign.exe"
 
 func (p Plugin) startDaemon() {
 	// this is a no-op on windows

docker.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/drone-plugins/drone-docker/internal/docker"
 	"github.com/drone-plugins/drone-plugin-lib/drone"
 )
 
@@ -34,52 +35,69 @@ type (
 
 	// Login defines Docker login parameters.
 	Login struct {
-		Registry string // Docker registry address
+		Registry    string // Docker registry address
-		Username string // Docker registry username
+		Username    string // Docker registry username
-		Password string // Docker registry password
+		Password    string // Docker registry password
-		Email    string // Docker registry email
+		Email       string // Docker registry email
-		Config   string // Docker Auth Config
+		Config      string // Docker Auth Config
+		AccessToken string // External Access Token
 	}
 
 	// Build defines Docker build parameters.
 	Build struct {
-		Remote      string   // Git remote URL
+		Remote              string   // Git remote URL
-		Name        string   // Docker build using default named tag
+		Name                string   // Docker build using default named tag
-		Dockerfile  string   // Docker build Dockerfile
+		TempTag             string   // Temporary tag used during docker build
-		Context     string   // Docker build context
+		Dockerfile          string   // Docker build Dockerfile
-		Tags        []string // Docker build tags
+		Context             string   // Docker build context
-		Args        []string // Docker build args
+		Tags                []string // Docker build tags
-		ArgsEnv     []string // Docker build args from env
+		Args                []string // Docker build args
-		Target      string   // Docker build target
+		ArgsEnv             []string // Docker build args from env
-		Squash      bool     // Docker build squash
+		ArgsNew             []string // docker build args which has comma seperated values
-		Pull        bool     // Docker build pull
+		IsMultipleBuildArgs bool     // env variable for fall back to old build args
-		CacheFrom   []string // Docker build cache-from
+		Target              string   // Docker build target
-		Compress    bool     // Docker build compress
+		Squash              bool     // Docker build squash
-		Repo        string   // Docker build repository
+		Pull                bool     // Docker build pull
-		LabelSchema []string // label-schema Label map
+		CacheFrom           []string // Docker build cache-from
-		AutoLabel   bool     // auto-label bool
+		Compress            bool     // Docker build compress
-		Labels      []string // Label map
+		Repo                string   // Docker build repository
-		Link        string   // Git repo link
+		LabelSchema         []string // label-schema Label map
-		NoCache     bool     // Docker build no-cache
+		AutoLabel           bool     // auto-label bool
-		Secret      string   // secret keypair
+		Labels              []string // Label map
-		SecretEnvs  []string // Docker build secrets with env var as source
+		Link                string   // Git repo link
-		SecretFiles []string // Docker build secrets with file as source
+		NoCache             bool     // Docker build no-cache
-		AddHost     []string // Docker build add-host
+		Secret              string   // secret keypair
-		Quiet       bool     // Docker build quiet
+		SecretEnvs          []string // Docker build secrets with env var as source
-		Platform    string   // Docker build platform
+		SecretFiles         []string // Docker build secrets with file as source
-		SSHAgentKey string   // Docker build ssh agent key
+		AddHost             []string // Docker build add-host
-		SSHKeyPath  string   // Docker build ssh key path
+		Quiet               bool     // Docker build quiet
+		Platform            string   // Docker build platform
+		SSHAgentKey         string   // Docker build ssh agent key
+		SSHKeyPath          string   // Docker build ssh key path
+	}
+
+	// CosignConfig defines Cosign signing parameters.
+	CosignConfig struct {
+		PrivateKey string // Private key content (PEM format) or file path
+		Password   string // Password for encrypted private keys
+		Params     string // Additional cosign parameters
 	}
 
 	// Plugin defines the Docker plugin parameters.
 	Plugin struct {
-		Login        Login  // Docker login configuration
+		Login             Login        // Docker login configuration
-		Build        Build  // Docker build configuration
+		Build             Build        // Docker build configuration
-		Daemon       Daemon // Docker daemon configuration
+		Daemon            Daemon       // Docker daemon configuration
-		Dryrun       bool   // Docker push is skipped
+		Cosign            CosignConfig // Cosign signing configuration
-		Cleanup      bool   // Docker purge is enabled
+		Dryrun            bool         // Docker push is skipped
-		CardPath     string // Card path to write file to
+		Cleanup           bool         // Docker purge is enabled
-		ArtifactFile string // Artifact path to write file to
+		CardPath          string       // Card path to write file to
+		ArtifactFile      string       // Artifact path to write file to
+		BaseImageRegistry string       // Docker registry to pull base image
+		BaseImageUsername string       // Docker registry username to pull base image
+		BaseImagePassword string       // Docker registry password to pull base image
+		PushOnly          bool         // Push only mode, skips build process
+		SourceImage       string       // Source image to push (optional)
 	}
 
 	Card []struct {
@@ -112,7 +130,6 @@ type (
 
 // Exec executes the plugin step
 func (p Plugin) Exec() error {
-
 	// start the Docker daemon server
 	if !p.Daemon.Disabled {
 		p.startDaemon()
@@ -142,6 +159,8 @@ func (p Plugin) Exec() error {
 		fmt.Println("Detected registry credentials")
 	case p.Login.Config != "":
 		fmt.Println("Detected registry credentials file")
+	case p.Login.AccessToken != "":
+		fmt.Println("Detected access token")
 	default:
 		fmt.Println("Registry credentials or Docker config not provided. Guest mode enabled.")
 	}
@@ -157,6 +176,39 @@ func (p Plugin) Exec() error {
 		}
 	}
 
+	// instead of writing to config file directly, using docker's login func
+	// is better to integrate with various credential helpers,
+	//	it also handles different registry specific logic in a better way,
+	//	as opposed to config write where different registries need to be addressed differently.
+	//	It handles any changes in the authentication process across different Docker versions.
+
+	if p.BaseImageRegistry != "" {
+		if p.BaseImageUsername == "" {
+			fmt.Printf("Username cannot be empty. The base image connector requires authenticated access. Please either use an authenticated connector, or remove the base image connector.")
+		}
+		if p.BaseImagePassword == "" {
+			fmt.Printf("Password cannot be empty. The base image connector requires authenticated access. Please either use an authenticated connector, or remove the base image connector.")
+		}
+		var baseConnectorLogin Login
+		baseConnectorLogin.Registry = p.BaseImageRegistry
+		baseConnectorLogin.Username = p.BaseImageUsername
+		baseConnectorLogin.Password = p.BaseImagePassword
+
+		cmd := commandLogin(baseConnectorLogin)
+
+		raw, err := cmd.CombinedOutput()
+		if err != nil {
+			out := string(raw)
+			out = strings.Replace(out, "WARNING! Using --password via the CLI is insecure. Use --password-stdin.", "", -1)
+			fmt.Println(out)
+			return fmt.Errorf("Error authenticating base connector: exit status 1")
+		}
+	} else if !p.PushOnly {
+		// Skip base image connector warning in push-only mode (not pulling anything)
+		fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+			"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
+	}
+
 	// login to the Docker registry
 	if p.Login.Password != "" {
 		cmd := commandLogin(p.Login)
@@ -165,8 +217,29 @@ func (p Plugin) Exec() error {
 			out := string(raw)
 			out = strings.Replace(out, "WARNING! Using --password via the CLI is insecure. Use --password-stdin.", "", -1)
 			fmt.Println(out)
-			return fmt.Errorf("Error authenticating: exit status 1")
+			return fmt.Errorf("error authenticating: exit status 1")
 		}
+	} else if p.Login.AccessToken != "" {
+		cmd := commandLoginAccessToken(p.Login, p.Login.AccessToken)
+		output, err := cmd.CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("error logging in to Docker registry: %s", err)
+		}
+		if strings.Contains(string(output), "Login Succeeded") {
+			fmt.Println("Login successful")
+		} else {
+			return fmt.Errorf("login did not succeed")
+		}
+	}
+
+	// Enforce mutual exclusivity: push-only and dry-run cannot be used together
+	if p.PushOnly && p.Dryrun {
+		return fmt.Errorf("conflict: push-only and dry-run cannot be used together")
+	}
+
+	// Handle push-only mode if requested
+	if p.PushOnly {
+		return p.pushOnly()
 	}
 
 	if p.Build.Squash && !p.Daemon.Experimental {
@@ -197,6 +270,14 @@ func (p Plugin) Exec() error {
 
 	cmds = append(cmds, commandBuild(p.Build)) // docker build
 
+	// Validate cosign configuration if present
+	if p.shouldSignWithCosign() {
+		if err := validateCosignConfig(p.Cosign); err != nil {
+			return fmt.Errorf("cosign validation failed: %w", err)
+		}
+		fmt.Println("🔐 Cosign signing enabled - images will be signed after push")
+	}
+
 	for _, tag := range p.Build.Tags {
 		cmds = append(cmds, commandTag(p.Build, tag)) // docker tag
 
@@ -229,7 +310,7 @@ func (p Plugin) Exec() error {
 	}
 
 	if p.ArtifactFile != "" {
-		if digest, err := getDigest(p.Build.Name); err == nil {
+		if digest, err := getDigest(p.Build.TempTag); err == nil {
 			if err = drone.WritePluginArtifactFile(p.Daemon.RegistryType, p.ArtifactFile, p.Daemon.Registry, p.Build.Repo, digest, p.Build.Tags); err != nil {
 				fmt.Printf("failed to write plugin artifact file at path: %s with error: %s\n", p.ArtifactFile, err)
 			}
@@ -238,13 +319,38 @@ func (p Plugin) Exec() error {
 		}
 	}
 
+	// Handle cosign signing after all commands complete (like artifact generation)
+	if p.shouldSignWithCosign() && !p.Dryrun {
+		// Set up environment variables for cosign
+		os.Setenv("COSIGN_YES", "true")
+
+		if digest, err := getDigest(p.Build.TempTag); err == nil {
+			fmt.Printf("🔐 Found image digest: %s\n", digest)
+			
+			// Sign with digest reference
+			imageRef := fmt.Sprintf("%s@%s", p.Build.Repo, digest)
+			cosignCmd := createCosignCommand(imageRef, p.Cosign)
+			executeCosignCommand(cosignCmd)
+		} else {
+			fmt.Printf("⚠️  WARNING: Could not get image digest for cosign signing: %s\n", err)
+			fmt.Printf("   Falling back to tag-based signing\n")
+			
+			// Fall back to tag-based signing for each tag
+			for _, tag := range p.Build.Tags {
+				imageRef := fmt.Sprintf("%s:%s", p.Build.Repo, tag)
+				cosignCmd := createCosignCommand(imageRef, p.Cosign)
+				executeCosignCommand(cosignCmd)
+			}
+		}
+	}
+
 	// execute cleanup routines in batch mode
 	if p.Cleanup {
 		// clear the slice
 		cmds = nil
 
-		cmds = append(cmds, commandRmi(p.Build.Name)) // docker rmi
+		cmds = append(cmds, commandRmi(p.Build.TempTag)) // docker rmi
-		cmds = append(cmds, commandPrune())           // docker system prune -f
+		cmds = append(cmds, commandPrune())              // docker system prune -f
 
 		for _, cmd := range cmds {
 			cmd.Stdout = os.Stdout
@@ -256,6 +362,35 @@ func (p Plugin) Exec() error {
 	return nil
 }
 
+// helper function to set the credentials
+func setDockerAuth(username, password, registry, baseImageUsername,
+	baseImagePassword, baseImageRegistry string) ([]byte, error) {
+	var credentials []docker.RegistryCredentials
+	// add only docker registry to the config
+	dockerConfig := docker.NewConfig()
+	if password != "" {
+		pushToRegistryCreds := docker.RegistryCredentials{
+			Registry: registry,
+			Username: username,
+			Password: password,
+		}
+		// push registry auth
+		credentials = append(credentials, pushToRegistryCreds)
+	}
+
+	if baseImageRegistry != "" {
+		pullFromRegistryCreds := docker.RegistryCredentials{
+			Registry: baseImageRegistry,
+			Username: baseImageUsername,
+			Password: baseImagePassword,
+		}
+		// base image registry auth
+		credentials = append(credentials, pullFromRegistryCreds)
+	}
+	// Creates docker config for both the registries used for authentication
+	return dockerConfig.CreateDockerConfigJson(credentials)
+}
+
 // helper function to create the docker login command.
 func commandLogin(login Login) *exec.Cmd {
 	if login.Email != "" {
@@ -269,6 +404,17 @@ func commandLogin(login Login) *exec.Cmd {
 	)
 }
 
+func commandLoginAccessToken(login Login, accessToken string) *exec.Cmd {
+	cmd := exec.Command(dockerExe,
+		"login",
+		"-u",
+		"oauth2accesstoken",
+		"--password-stdin",
+		login.Registry)
+	cmd.Stdin = strings.NewReader(accessToken)
+	return cmd
+}
+
 // helper to check if args match "docker pull <image>"
 func isCommandPull(args []string) bool {
 	return len(args) > 2 && args[1] == "pull"
@@ -304,7 +450,7 @@ func commandBuild(build Build) *exec.Cmd {
 		"build",
 		"--rm=true",
 		"-f", build.Dockerfile,
-		"-t", build.Name,
+		"-t", build.TempTag,
 	}
 
 	args = append(args, build.Context)
@@ -326,8 +472,14 @@ func commandBuild(build Build) *exec.Cmd {
 	for _, arg := range build.ArgsEnv {
 		addProxyValue(&build, arg)
 	}
-	for _, arg := range build.Args {
+	if build.IsMultipleBuildArgs {
-		args = append(args, "--build-arg", arg)
+		for _, arg := range build.ArgsNew {
+			args = append(args, "--build-arg", arg)
+		}
+	} else {
+		for _, arg := range build.Args {
+			args = append(args, "--build-arg", arg)
+		}
 	}
 	for _, host := range build.AddHost {
 		args = append(args, "--add-host", host)
@@ -432,6 +584,10 @@ func addProxyValue(build *Build, key string) {
 		build.Args = append(build.Args, fmt.Sprintf("%s=%s", key, value))
 		build.Args = append(build.Args, fmt.Sprintf("%s=%s", strings.ToUpper(key), value))
 	}
+	if len(value) > 0 && !hasProxyBuildArgNew(build, key) {
+		build.ArgsNew = append(build.ArgsNew, fmt.Sprintf("%s=%s", key, value))
+		build.ArgsNew = append(build.ArgsNew, fmt.Sprintf("%s=%s", strings.ToUpper(key), value))
+	}
 }
 
 // helper function to get a proxy value from the environment.
@@ -459,11 +615,22 @@ func hasProxyBuildArg(build *Build, key string) bool {
 
 	return false
 }
+func hasProxyBuildArgNew(build *Build, key string) bool {
+	keyUpper := strings.ToUpper(key)
+
+	for _, s := range build.ArgsNew {
+		if strings.HasPrefix(s, key) || strings.HasPrefix(s, keyUpper) {
+			return true
+		}
+	}
+
+	return false
+}
 
 // helper function to create the docker tag command.
 func commandTag(build Build, tag string) *exec.Cmd {
 	var (
-		source = build.Name
+		source = build.TempTag
 		target = fmt.Sprintf("%s:%s", build.Repo, tag)
 	)
 	return exec.Command(
@@ -532,6 +699,11 @@ func isCommandRmi(args []string) bool {
 	return len(args) > 2 && args[1] == "rmi"
 }
 
+// helper to check if args match "cosign sign"
+func isCommandCosign(args []string) bool {
+	return len(args) > 1 && args[0] == cosignExe
+}
+
 func commandRmi(tag string) *exec.Cmd {
 	return exec.Command(dockerExe, "rmi", tag)
 }
@@ -568,7 +740,7 @@ func GetDroneDockerExecCmd() string {
 }
 
 func getDigest(buildName string) (string, error) {
-	cmd := exec.Command("docker", "inspect", "--format='{{index .RepoDigests 0}}'", buildName)
+	cmd := exec.Command(dockerExe, "inspect", "--format='{{index .RepoDigests 0}}'", buildName)
 	output, err := cmd.Output()
 	if err != nil {
 		return "", err
@@ -582,3 +754,284 @@ func getDigest(buildName string) (string, error) {
 	}
 	return "", errors.New("unable to fetch digest")
 }
+
+// imageExists checks if an image exists in local daemon
+func imageExists(tag string) bool {
+	cmd := exec.Command(dockerExe, "image", "inspect", tag)
+	return cmd.Run() == nil
+}
+
+// getDigestAfterPush gets digest from a pushed image
+func getDigestAfterPush(tag string) (string, error) {
+	cmd := exec.Command(dockerExe, "inspect", "--format", "{{ index (split (index .RepoDigests 0) \"@\") 1 }}", tag)
+	output, err := cmd.Output()
+	if err != nil {
+		return "", fmt.Errorf("failed to get digest for %s: %w", tag, err)
+	}
+	return strings.TrimSpace(string(output)), nil
+}
+
+// shouldSignWithCosign determines if cosign signing should be performed
+func (p Plugin) shouldSignWithCosign() bool {
+	return p.Cosign.PrivateKey != ""
+}
+
+// validateCosignConfig validates the cosign configuration
+func validateCosignConfig(config CosignConfig) error {
+	if config.PrivateKey == "" {
+		return nil // No cosign config, skip silently
+	}
+
+	// Check if cosign binary is available
+	if _, err := exec.LookPath(cosignExe); err != nil {
+		fmt.Printf("❌ ERROR: cosign binary not found at %s\n", cosignExe)
+		fmt.Println("   Ensure you're using a plugin image that includes cosign")
+		return fmt.Errorf("cosign binary not available: %w", err)
+	}
+
+	// Check if it's trying to use keyless signing
+	if strings.Contains(config.Params, "--oidc") ||
+		strings.Contains(config.Params, "--identity-token") {
+		fmt.Println("⚠️  WARNING: Keyless signing (OIDC) isn't supported yet in this plugin. Use private key signing instead.")
+		return errors.New("keyless signing not supported")
+	}
+
+	// Validate private key format if it's PEM content
+	if strings.HasPrefix(config.PrivateKey, "-----BEGIN") {
+		if !isValidPEMKey(config.PrivateKey) {
+			return errors.New("❌ Invalid private key format. Expected PEM format")
+		}
+
+		// Check encrypted key password requirement
+		if isEncryptedPEMKey(config.PrivateKey) && config.Password == "" {
+			return errors.New("🔐 Encrypted private key requires password. Set PLUGIN_COSIGN_PASSWORD")
+		}
+
+	} else {
+		// File-based key - check if it's accessible (basic check)
+		if _, err := os.Stat(config.PrivateKey); err != nil {
+			fmt.Printf("⚠️  WARNING: Private key file may not be accessible: %s\n", config.PrivateKey)
+			fmt.Println("   This will be verified during signing")
+		}
+	}
+
+	return nil
+}
+
+// isEncryptedPEMKey checks if a PEM key is encrypted
+func isEncryptedPEMKey(pemContent string) bool {
+	return strings.Contains(pemContent, "ENCRYPTED")
+}
+
+// isValidPEMKey performs basic PEM format validation
+func isValidPEMKey(pemContent string) bool {
+	return strings.Contains(pemContent, "-----BEGIN") &&
+		strings.Contains(pemContent, "-----END") &&
+		(strings.Contains(pemContent, "PRIVATE KEY") ||
+			strings.Contains(pemContent, "RSA PRIVATE KEY") ||
+			strings.Contains(pemContent, "EC PRIVATE KEY"))
+}
+
+// createCosignCommand creates a cosign sign command with the given image reference
+func createCosignCommand(imageRef string, cosign CosignConfig) *exec.Cmd {
+	args := []string{"sign", "--yes"}
+	
+	// Handle private key (content vs file path)
+	if strings.HasPrefix(cosign.PrivateKey, "-----BEGIN") {
+		args = append(args, "--key", "env://COSIGN_PRIVATE_KEY")
+		os.Setenv("COSIGN_PRIVATE_KEY", cosign.PrivateKey)
+	} else {
+		args = append(args, "--key", cosign.PrivateKey)
+	}
+	
+	// Set password if provided
+	if cosign.Password != "" {
+		os.Setenv("COSIGN_PASSWORD", cosign.Password)
+	}
+	
+	// Add any extra parameters
+	if cosign.Params != "" {
+		extraArgs := strings.Fields(cosign.Params)
+		args = append(args, extraArgs...)
+	}
+	
+	// Add the image reference to sign
+	args = append(args, imageRef)
+	
+	return exec.Command(cosignExe, args...)
+}
+
+// executeCosignCommand executes the given cosign command and handles errors
+func executeCosignCommand(cmd *exec.Cmd) {
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	fmt.Printf("🚀 Executing: %s %s\n", cmd.Path, strings.Join(cmd.Args[1:], " "))
+
+	if err := cmd.Run(); err != nil {
+		fmt.Printf("⚠️  WARNING: Image signing failed: %s\n", err)
+		fmt.Printf("   Image was pushed successfully but could not be signed\n")
+		fmt.Printf("   This is not fatal - continuing with the build\n")
+	}
+}
+
+// pushOnly handles pushing images without building them
+func (p Plugin) pushOnly() error {
+	// Check if source image is specified
+	sourceImageName := p.SourceImage
+	var sourceTags []string
+
+	if sourceImageName == "" {
+		// If no source image specified, use the repo and first tag
+		fmt.Println("source_image not provided, using repo and tag value")
+		sourceImageName = p.Build.Repo
+		sourceTags = p.Build.Tags
+	} else {
+		// If source image is specified, check if it has a tag
+		lastColonIndex := strings.LastIndex(sourceImageName, ":")
+		if lastColonIndex > 0 && lastColonIndex < len(sourceImageName) {
+			// Check if there's a slash after the last colon (indicating it's a port, not a tag)
+			// For example: registry:5000/image (has slash after colon - port not tag)
+			// vs image:tag (no slash after colon - it's a tag)
+			if strings.LastIndex(sourceImageName, "/") > lastColonIndex {
+				// The last colon is part of the registry:port, not a tag separator
+				sourceTags = []string{"latest"}
+			} else {
+				// The last colon separates the tag
+				tag := sourceImageName[lastColonIndex+1:]
+				sourceImageName = sourceImageName[:lastColonIndex]
+
+				if tag == "" {
+					fmt.Printf("No tag specified in source image (or empty tag). Using 'latest' as the default tag.\n")
+					tag = "latest"
+				}
+				sourceTags = []string{tag}
+			}
+		} else {
+			// Default to "latest" if no tag specified
+			sourceTags = []string{"latest"}
+		}
+		fmt.Printf("Using source image: %s with tag(s): %s\n", sourceImageName, strings.Join(sourceTags, ", "))
+	}
+
+	// For each source tag and target tag combination
+	var digest string
+	var firstPushedImage string
+
+	for _, sourceTag := range sourceTags {
+		sourceFullImageName := fmt.Sprintf("%s:%s", sourceImageName, sourceTag)
+
+		// Check if the source image exists in local daemon
+		if !imageExists(sourceFullImageName) {
+			fmt.Printf("Warning: Source image %s not found\n", sourceFullImageName)
+			// Continue to the next source tag if available, otherwise return error
+			if len(sourceTags) > 1 {
+				continue
+			}
+			return fmt.Errorf("source image %s not found, cannot push", sourceFullImageName)
+		}
+
+		// For each target tag, tag and push
+		for _, targetTag := range p.Build.Tags {
+			targetFullImageName := fmt.Sprintf("%s:%s", p.Build.Repo, targetTag)
+
+			// Skip if source and target are identical
+			if sourceFullImageName == targetFullImageName {
+				fmt.Printf("Source and target image names are identical: %s\n", sourceFullImageName)
+			} else {
+				// Tag the source image with the target name
+				fmt.Printf("Tagging %s as %s\n", sourceFullImageName, targetFullImageName)
+				tagCmd := exec.Command(dockerExe, "tag", sourceFullImageName, targetFullImageName)
+				tagCmd.Stdout = os.Stdout
+				tagCmd.Stderr = os.Stderr
+				trace(tagCmd)
+				if err := tagCmd.Run(); err != nil {
+					return fmt.Errorf("failed to tag image %s as %s: %w", sourceFullImageName, targetFullImageName, err)
+				}
+			}
+		}
+	}
+
+	// Push all target images
+	for _, tag := range p.Build.Tags {
+		fullImageName := fmt.Sprintf("%s:%s", p.Build.Repo, tag)
+
+		// Check if image exists in local daemon
+		if !imageExists(fullImageName) {
+			return fmt.Errorf("image %s not found, cannot push", fullImageName)
+		}
+
+		// Push image
+		fmt.Println("Pushing image:", fullImageName)
+		pushCmd := commandPush(p.Build, tag)
+		pushCmd.Stdout = os.Stdout
+		pushCmd.Stderr = os.Stderr
+		trace(pushCmd)
+		if err := pushCmd.Run(); err != nil {
+			return fmt.Errorf("failed to push image %s: %w", fullImageName, err)
+		}
+
+		// Track the first pushed image for card generation
+		if firstPushedImage == "" {
+			firstPushedImage = fullImageName
+		}
+
+		// Get the digest after push (we only need one)
+		if digest == "" {
+			d, err := getDigestAfterPush(fullImageName)
+			if err == nil {
+				digest = d
+			} else {
+				fmt.Printf("Warning: Could not get digest for %s: %v\n", fullImageName, err)
+			}
+		}
+	}
+
+	// Output the adaptive card
+	if firstPushedImage != "" {
+		if err := p.writeCardForImage(firstPushedImage); err != nil {
+			fmt.Printf("Could not create adaptive card. %s\n", err)
+		}
+	}
+
+	// Write to artifact file
+	if p.ArtifactFile != "" && digest != "" {
+		if err := drone.WritePluginArtifactFile(
+			p.Daemon.RegistryType,
+			p.ArtifactFile,
+			p.Daemon.Registry,
+			p.Build.Repo,
+			digest,
+			p.Build.Tags,
+		); err != nil {
+			fmt.Printf("Failed to write plugin artifact file at path: %s with error: %s\n",
+				p.ArtifactFile, err)
+		}
+	}
+
+	// Handle cosign signing after push
+	if p.shouldSignWithCosign() {
+		// Set up environment variables for cosign
+		os.Setenv("COSIGN_YES", "true")
+
+		if digest != "" {
+			fmt.Printf("🔐 Found image digest: %s\n", digest)
+
+			// Sign with digest reference
+			imageRef := fmt.Sprintf("%s@%s", p.Build.Repo, digest)
+			cosignCmd := createCosignCommand(imageRef, p.Cosign)
+			executeCosignCommand(cosignCmd)
+		} else {
+			fmt.Printf("⚠️  WARNING: Could not get image digest for cosign signing\n")
+			fmt.Printf("   Falling back to tag-based signing\n")
+
+			// Fall back to tag-based signing for each tag
+			for _, tag := range p.Build.Tags {
+				imageRef := fmt.Sprintf("%s:%s", p.Build.Repo, tag)
+				cosignCmd := createCosignCommand(imageRef, p.Cosign)
+				executeCosignCommand(cosignCmd)
+			}
+		}
+	}
+
+	return nil
+}

docker/docker/Dockerfile.linux.amd64

@@ -1,6 +1,10 @@
-FROM docker:20.10.14-dind
+FROM docker:28.1.1-dind
 
 ENV DOCKER_HOST=unix:///var/run/docker.sock
 
+# Install cosign for container image signing
+RUN wget -O /usr/local/bin/cosign https://github.com/sigstore/cosign/releases/download/v2.5.3/cosign-linux-amd64 \
+    && chmod +x /usr/local/bin/cosign
+
 ADD release/linux/amd64/drone-docker /bin/
 ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-docker"]

docker/docker/Dockerfile.linux.arm64

@@ -1,6 +1,10 @@
-FROM arm64v8/docker:20.10.14-dind
+FROM arm64v8/docker:28.1.1-dind
 
 ENV DOCKER_HOST=unix:///var/run/docker.sock
 
+# Install cosign for container image signing
+RUN wget -O /usr/local/bin/cosign https://github.com/sigstore/cosign/releases/download/v2.5.3/cosign-linux-arm64 \
+    && chmod +x /usr/local/bin/cosign
+
 ADD release/linux/arm64/drone-docker /bin/
 ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-docker"]

docker/docker/Dockerfile.windows.amd64.1809

@@ -24,6 +24,10 @@ LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.schema-version="1.0"
 
 RUN mkdir C:\bin
+
+# Install cosign for container image signing
+ADD https://github.com/sigstore/cosign/releases/download/v2.5.3/cosign-windows-amd64.exe C:/bin/cosign.exe
+
 COPY --from=download /windows/system32/netapi32.dll /windows/system32/netapi32.dll
 COPY --from=download /app/docker.exe C:/bin/docker.exe
 ADD release/windows/amd64/drone-docker.exe C:/bin/drone-docker.exe

docker/docker/Dockerfile.windows.amd64.ltsc2022

@@ -22,6 +22,10 @@ LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.schema-version="1.0"
 
 RUN mkdir C:\bin
+
+# Install cosign for container image signing
+ADD https://github.com/sigstore/cosign/releases/download/v2.5.3/cosign-windows-amd64.exe C:/bin/cosign.exe
+
 COPY --from=download /windows/system32/netapi32.dll /windows/system32/netapi32.dll
 COPY --from=download /app/docker.exe C:/bin/docker.exe
 ADD release/windows/amd64/drone-docker.exe C:/bin/drone-docker.exe

docker/gar/Dockerfile.linux.amd64

@@ -0,0 +1,4 @@
+FROM plugins/docker:linux-amd64
+
+ADD release/linux/amd64/drone-gar /bin/
+ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-gar"]

docker/gar/Dockerfile.linux.arm64

@@ -0,0 +1,4 @@
+FROM plugins/docker:linux-arm64
+
+ADD release/linux/arm64/drone-gar /bin/
+ENTRYPOINT ["/usr/local/bin/dockerd-entrypoint.sh", "/bin/drone-gar"]

docker/gar/Dockerfile.windows.amd64.1809

@@ -0,0 +1,10 @@
+# escape=`
+FROM plugins/docker:windows-1809-amd64
+
+LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
+  org.label-schema.name="Drone GAR" `
+  org.label-schema.vendor="Drone.IO Community" `
+  org.label-schema.schema-version="1.0"
+
+ADD release/windows/amd64/drone-gar.exe C:/bin/drone-gar.exe
+ENTRYPOINT [ "C:\\bin\\drone-gar.exe" ]

docker/gar/Dockerfile.windows.amd64.ltsc2022

@@ -0,0 +1,10 @@
+# escape=`
+FROM plugins/docker:windows-ltsc2022-amd64
+
+LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
+  org.label-schema.name="Drone GAR" `
+  org.label-schema.vendor="Drone.IO Community" `
+  org.label-schema.schema-version="1.0"
+
+ADD release/windows/amd64/drone-gar.exe C:/bin/drone-gar.exe
+ENTRYPOINT [ "C:\\bin\\drone-gar.exe" ]

docker/gar/manifest.tmpl

@@ -0,0 +1,31 @@
+image: plugins/gar:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  -
+    image: plugins/gar:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+    platform:
+      architecture: amd64
+      os: linux
+  -
+    image: plugins/gar:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
+    platform:
+      architecture: arm64
+      os: linux
+      variant: v8
+  -
+    image: plugins/gar:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1809-amd64
+    platform:
+      architecture: amd64
+      os: windows
+      version: 1809
+  -
+    image: plugins/gar:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-ltsc2022-amd64
+    platform:
+      architecture: amd64
+      os: windows
+      version: ltsc2022

docker_test.go

@@ -3,10 +3,14 @@ package docker
 import (
 	"os/exec"
 	"reflect"
+	"strings"
 	"testing"
+
+	"github.com/dchest/uniuri"
 )
 
 func TestCommandBuild(t *testing.T) {
+	tempTag := strings.ToLower(uniuri.New())
 	tcs := []struct {
 		name  string
 		build Build
@@ -16,6 +20,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "secret from env var",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				SecretEnvs: []string{
@@ -29,7 +34,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 				"--secret id=foo_secret,env=FOO_SECRET_ENV_VAR",
 			),
@@ -38,6 +43,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "secret from file",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				SecretFiles: []string{
@@ -51,7 +57,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 				"--secret id=foo_secret,src=/path/to/foo_secret",
 			),
@@ -60,6 +66,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "multiple mixed secrets",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				SecretEnvs: []string{
@@ -78,7 +85,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 				"--secret id=foo_secret,env=FOO_SECRET_ENV_VAR",
 				"--secret id=bar_secret,env=BAR_SECRET_ENV_VAR",
@@ -90,6 +97,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "invalid mixed secrets",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				SecretEnvs: []string{
@@ -110,7 +118,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 			),
 		},
@@ -118,6 +126,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "platform argument",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				Platform:   "test/platform",
@@ -129,7 +138,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 				"--platform",
 				"test/platform",
@@ -139,6 +148,7 @@ func TestCommandBuild(t *testing.T) {
 			name: "ssh agent",
 			build: Build{
 				Name:       "plugins/drone-docker:latest",
+				TempTag:    tempTag,
 				Dockerfile: "Dockerfile",
 				Context:    ".",
 				SSHKeyPath: "id_rsa=/root/.ssh/id_rsa",
@@ -150,7 +160,7 @@ func TestCommandBuild(t *testing.T) {
 				"-f",
 				"Dockerfile",
 				"-t",
-				"plugins/drone-docker:latest",
+				tempTag,
 				".",
 				"--ssh id_rsa=/root/.ssh/id_rsa",
 			),

git-hooks/README.md

@@ -0,0 +1,8 @@
+This document explains on how to install certain git hooks globally for all repositories in your machine.
+
+Step 1: git clone https://github.com/drone-plugins/drone-docker.git
+Step 2: cd git-hooks
+Step 3: Run install.sh
+
+"install.sh" script will create .git_template in the user directory and will put the git hook and its dependent scripts in it. Along with the .git_template folder, it will add 2 sections "init" and "hooks boolean" in the .gitconfig file in the same user's root directory.
+After running "install.sh" if you create/clone a new git repository then all the hooks will get install automatically for the git repository. In case of existing git repository copy the contents of ~/.git_template/hooks into the .git/hooks directory of existing git repository.

git-hooks/hooks/git-leaks-pre-commit.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+#Helper script to be used as a pre-commit hook.
+
+echo "This hook checks for any secrets getting pushed as part of commit. If you feel that scan is false positive. \
+Then add the exclusion in .gitleaksignore file. For more info visit: https://github.com/zricethezav/gitleaks"
+
+GIT_LEAKS_PRE_COMMIT=s$(git config --bool hook.pre-commit.gitleak)
+
+echo "INFO: Scanning Commits information for any GIT LEAKS"
+gitleaks protect --staged -v --exit-code=100
+STATUS=$?
+if [ $STATUS = 100  ]; then
+    echo "WARNING: GIT LEAKS has detected sensitive information in your changes. Please remove them or add them (IF NON-SENSITIVE) in .gitleaksignore file."
+else
+    exit 0
+fi

git-hooks/hooks/git-leaks.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+#Helper script to be used as a pre-commit hook.
+
+echo "This hook checks for any secrets getting pushed as part of commit. If you feel that scan is false positive. \
+Then add the exclusion in .gitleaksignore file. For more info visit: https://github.com/zricethezav/gitleaks"
+
+GIT_LEAKS=$(git config --bool hook.pre-push.gitleaks)
+
+echo "INFO: Scanning Commits information for any GIT LEAKS"
+gitleaks detect -s ./ --log-level=debug --log-opts=-1 -v
+STATUS=$?
+if [ $STATUS != 0  ]; then
+    echo "WARNING: GIT LEAKS has detected sensitive information in your changes. Please remove them or add them (IF NON-SENSITIVE) in .gitleaksignore file."
+    exit $STATUS
+else
+    exit 0
+fi

git-hooks/hooks/pre-commit

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+GL_SCRIPT_PATH="$HOME/.git_template/hooks/git-leaks-pre-commit.sh"
+
+pushd `dirname $0` > /dev/null && cd ../.. && BASEDIR=$(pwd -L) && popd > /dev/null
+BASENAME=`basename $0`
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+    against=HEAD
+else
+    #Initial commit : diff against an empty tree object
+    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+GIT_LEAKS_PRE_COMMIT=hook.pre-commit.gitleaks
+if [ "`git config $GIT_LEAKS_PRE_COMMIT`" == "false" ]
+then
+    echo -e '\033[0;31m' checking git leaks is disabled - to enable: '\033[0;37m'git config --unset $GIT_LEAKS_PRE_COMMIT '\033[0m'
+    echo -e '\033[0;34m' checking git leaks  ... to enable: '\033[0;37m'git config --add $GIT_LEAKS_PRE_COMMIT true '\033[0m'
+else
+    echo -e '\033[0;34m' checking for git leaks...
+    [ -f "${GL_SCRIPT_PATH}" ] && . ${GL_SCRIPT_PATH} || echo "ERROR: Hook Script Not Found..." && exit 404
+fi

git-hooks/hooks/pre-push

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+GL_SCRIPT_PATH="$HOME/.git_template/hooks/git-leaks.sh"
+
+pushd `dirname $0` > /dev/null && cd ../.. && BASEDIR=$(pwd -L) && popd > /dev/null
+BASENAME=`basename $0`
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+    against=HEAD
+else
+    #Initial commit : diff against an empty tree object
+    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+GIT_LEAKS=hook.pre-push.gitleaks
+if [ "`git config $GIT_LEAKS`" == "false" ]
+then
+    echo -e '\033[0;31m' checking git leaks is disabled - to enable: '\033[0;37m'git config --unset $GIT_LEAKS '\033[0m'
+    echo -e '\033[0;34m' checking git leaks  ... to enable: '\033[0;37m'git config --add $GIT_LEAKS true '\033[0m'
+else
+    echo -e '\033[0;34m' checking for git leaks...
+    [ -f "${GL_SCRIPT_PATH}" ] && . ${GL_SCRIPT_PATH} || echo "ERROR: Hook Script Not Found..." && exit 404
+fi

git-hooks/install.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+#Function to check if package is installed or not
+#args: $1: Name of the Package
+function check_package_installed() {
+  LOCAL_PACKAGE_NAME=$1
+  echo "Checking if $LOCAL_PACKAGE_NAME is installed or not..."
+  brew list $LOCAL_PACKAGE_NAME
+  if [ "$?" -eq 1 ];then
+    echo "Installing $LOCAL_PACKAGE_NAME package..."
+    brew install $LOCAL_PACKAGE_NAME
+  fi
+}
+
+function create_git_template() {
+    cd $BASEDIR
+    mkdir -p ~/.git_template/hooks
+    git config --global init.templatedir ${GIT_TEMPLATE}
+    git config --global --add $GIT_LEAKS true
+    git config --global --add $GIT_LEAKS_PRE_COMMIT true
+    find hooks/ -type f -exec cp "{}" ~/.git_template/hooks \;
+    #cp -f hooks/* ~/.git_template/hooks
+    cat ~/.gitconfig
+}
+
+GIT_TEMPLATE="~/.git_template"
+GIT_LEAKS=hook.pre-push.gitleaks
+GIT_LEAKS_PRE_COMMIT=hook.pre-commit.gitleaks
+
+pushd `dirname $0` && BASEDIR=$(pwd -L) && popd
+
+echo This script will install hooks that run scripts that could be updated without notice.
+
+while true; do
+    read -p "Do you wish to install these hooks?" yn
+    case $yn in
+        [Yy]* ) check_package_installed "gitleaks";
+                break;;
+        [Nn]* ) exit;;
+        * ) echo "Please answer yes or no.";;
+    esac
+done
+
+create_git_template

go.mod

@@ -1,23 +1,53 @@
 module github.com/drone-plugins/drone-docker
 
 require (
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.1
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.2
 	github.com/aws/aws-sdk-go v1.26.7
 	github.com/coreos/go-semver v0.3.0
+	github.com/dchest/uniuri v1.2.0
 	github.com/drone-plugins/drone-plugin-lib v0.4.1
 	github.com/drone/drone-go v1.7.1
 	github.com/inhies/go-bytesize v0.0.0-20210819104631-275770b98743
 	github.com/joho/godotenv v1.3.0
+	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.9.0
+	github.com/stretchr/testify v1.10.0
 	github.com/urfave/cli v1.22.2
+	golang.org/x/oauth2 v0.27.0
+	google.golang.org/api v0.146.0
 )
 
 require (
+	cloud.google.com/go/compute/metadata v0.3.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.3.3 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.1 // indirect
+	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
 	github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af // indirect
+	github.com/kylelemons/godebug v1.1.0 // indirect
+	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	golang.org/x/sys v0.0.0-20220731174439-a90be440212d // indirect
+	go.opencensus.io v0.24.0 // indirect
+	golang.org/x/crypto v0.36.0 // indirect
+	golang.org/x/net v0.37.0 // indirect
+	golang.org/x/sys v0.31.0 // indirect
+	golang.org/x/text v0.23.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	google.golang.org/grpc v1.59.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/yaml.v2 v2.2.8 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
-go 1.17
+go 1.23.0
+
+toolchain go1.23.7

go.sum

@@ -1,8 +1,27 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go/compute/metadata v0.3.0 h1:Tz+eQXMEqDIKRsmY3cHTL6FVaynIjX2QxYC4trgAKZc=
+cloud.google.com/go/compute/metadata v0.3.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k=
 github.com/99designs/httpsignatures-go v0.0.0-20170731043157-88528bf4ca7e/go.mod h1:Xa6lInWHNQnuWoF0YPSsx+INFA9qk7/7pTjwb3PInkY=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.1 h1:DSDNVxqkoXJiko6x8a90zidoYqnYYa6c1MTzDKzKkTo=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.1/go.mod h1:zGqV2R4Cr/k8Uye5w+dgQ06WJtEcbQG/8J7BB6hnCr4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.2 h1:F0gBpfdPLGsw+nsgk6aqqkZS1jiixa5WwFe3fk/T3Ys=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.2/go.mod h1:SqINnQ9lVVdRlyC8cd1lCI0SdX4n2paeABd2K8ggfnE=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2 h1:yz1bePFlP5Vws5+8ez6T3HWXPmwOK7Yvq8QxDBD3SKY=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2/go.mod h1:Pa9ZNPuoNu/GztvBSKk9J1cDJW6vk/n0zLtV4mgd8N8=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.3 h1:H5xDQaE3XowWfhZRUpnfC+rGZMEVoSiji+b+/HFAPU4=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.3/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/aws/aws-sdk-go v1.26.7 h1:ObjEnmzvSdYy8KVd3me7v/UMyCn81inLy2SyoIPoBkg=
 github.com/aws/aws-sdk-go v1.26.7/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
@@ -11,20 +30,80 @@ github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dchest/uniuri v1.2.0 h1:koIcOUdrTIivZgSLhHQvKgqdWZq5d7KdMEWF1Ud6+5g=
+github.com/dchest/uniuri v1.2.0/go.mod h1:fSzm4SLHzNZvWLvWJew423PhAzkpNQYq+uNLq4kxhkY=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/drone-plugins/drone-plugin-lib v0.4.1 h1:47rZlmcMpr1hSp+6Gl+1Z4t+efi/gMQU3lxukC1Yg64=
 github.com/drone-plugins/drone-plugin-lib v0.4.1/go.mod h1:KwCu92jFjHV3xv2hu5Qg/8zBNvGwbhoJDQw/EwnTvoM=
 github.com/drone/drone-go v1.7.1 h1:ZX+3Rs8YHUSUQ5mkuMLmm1zr1ttiiE2YGNxF3AnyDKw=
 github.com/drone/drone-go v1.7.1/go.mod h1:fxCf9jAnXDZV1yDr0ckTuWd1intvcQwfJmTRpTZ1mXg=
-github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
+github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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internal/azure/tokenutil.go

@@ -0,0 +1,75 @@
+package azure
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+const DefaultResource = "https://management.azure.com/"
+const defaultAuthorityHost = "https://login.microsoftonline.com"
+const defaultHTTPTimeout = 30 * time.Second
+
+// GetAADAccessTokenViaClientAssertion exchanges an external OIDC ID token for an Azure AD access token
+
+func GetAADAccessTokenViaClientAssertion(ctx context.Context, tenantID, clientID, oidcToken, authorityHost string) (string, error) {
+    resource := DefaultResource
+
+	form := url.Values{
+		"client_id":             {clientID},
+		"scope":                 {resource + ".default"},
+		"grant_type":            {"client_credentials"},
+		"client_assertion_type": {"urn:ietf:params:oauth:client-assertion-type:jwt-bearer"},
+		"client_assertion":      {oidcToken},
+	}
+
+	base := authorityHost
+	if strings.TrimSpace(base) == "" {
+		base = defaultAuthorityHost
+	}
+	base = strings.TrimRight(base, "/")
+	endpoint := fmt.Sprintf("%s/%s/oauth2/v2.0/token", base, tenantID)
+
+	client := &http.Client{Timeout: defaultHTTPTimeout}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, strings.NewReader(form.Encode()))
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Accept", "application/json")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		var aadErr struct {
+			Error            string `json:"error"`
+			ErrorDescription string `json:"error_description"`
+		}
+		limited := io.LimitedReader{R: resp.Body, N: 4096}
+		_ = json.NewDecoder(&limited).Decode(&aadErr)
+		if aadErr.Error != "" {
+			return "", fmt.Errorf("AAD token request failed: status=%d, error=%s", resp.StatusCode, aadErr.Error)
+		}
+		return "", fmt.Errorf("AAD token request failed: status=%d", resp.StatusCode)
+	}
+	var payload struct {
+		AccessToken string `json:"access_token"`
+		TokenType   string `json:"token_type"`
+		ExpiresIn   int    `json:"expires_in"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&payload); err != nil {
+		return "", err
+	}
+	if payload.AccessToken == "" {
+		return "", fmt.Errorf("AAD token response missing access_token")
+	}
+	return payload.AccessToken, nil
+}

internal/azure/tokenutil_test.go

@@ -0,0 +1,104 @@
+package azure
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestGetAADAccessTokenViaClientAssertion_Success(t *testing.T) {
+
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Fatalf("expected POST, got %s", r.Method)
+		}
+		if ct := r.Header.Get("Content-Type"); !strings.Contains(ct, "application/x-www-form-urlencoded") {
+			t.Fatalf("expected form content-type, got %s", ct)
+		}
+		if err := r.ParseForm(); err != nil {
+			t.Fatalf("failed parsing form: %v", err)
+		}
+		assertEq(t, r.Form.Get("client_id"), "client")
+		assertEq(t, r.Form.Get("grant_type"), "client_credentials")
+		assertEq(t, r.Form.Get("client_assertion_type"), "urn:ietf:params:oauth:client-assertion-type:jwt-bearer")
+		assertEq(t, r.Form.Get("client_assertion"), "idtoken")
+		assertEq(t, r.Form.Get("scope"), DefaultResource+".default")
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte(`{"access_token":"AT","token_type":"Bearer","expires_in":3600}`))
+	}))
+	defer ts.Close()
+
+	tok, err := GetAADAccessTokenViaClientAssertion(context.Background(), "tenant", "client", "idtoken", ts.URL)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if tok != "AT" {
+		t.Fatalf("expected access token AT, got %q", tok)
+	}
+}
+
+func TestGetAADAccessTokenViaClientAssertion_400WithErrorField(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusBadRequest)
+		_, _ = w.Write([]byte(`{"error":"invalid_client","error_description":"bad"}`))
+	}))
+	defer ts.Close()
+
+	_, err := GetAADAccessTokenViaClientAssertion(context.Background(), "tenant", "client", "idtoken", ts.URL)
+	if err == nil || !strings.Contains(err.Error(), "status=400") || !strings.Contains(err.Error(), "invalid_client") {
+		t.Fatalf("expected 400 with invalid_client error, got %v", err)
+	}
+}
+
+func TestGetAADAccessTokenViaClientAssertion_400WithoutErrorField(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusBadRequest)
+		_, _ = w.Write([]byte("{}"))
+	}))
+	defer ts.Close()
+
+	_, err := GetAADAccessTokenViaClientAssertion(context.Background(), "tenant", "client", "idtoken", ts.URL)
+	if err == nil || !strings.Contains(err.Error(), "status=400") {
+		t.Fatalf("expected 400 error, got %v", err)
+	}
+}
+
+func TestGetAADAccessTokenViaClientAssertion_MalformedJSON(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte("not-json"))
+	}))
+	defer ts.Close()
+
+	_, err := GetAADAccessTokenViaClientAssertion(context.Background(), "tenant", "client", "idtoken", ts.URL)
+	if err == nil {
+		t.Fatalf("expected JSON decode error, got nil")
+	}
+}
+
+func TestGetAADAccessTokenViaClientAssertion_MissingAccessToken(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte(`{"token_type":"Bearer","expires_in":3600}`))
+	}))
+	defer ts.Close()
+
+	_, err := GetAADAccessTokenViaClientAssertion(context.Background(), "tenant", "client", "idtoken", ts.URL)
+	if err == nil || !strings.Contains(err.Error(), "missing access_token") {
+		t.Fatalf("expected missing access_token error, got %v", err)
+	}
+}
+
+func assertEq(t *testing.T, got, want string) {
+	t.Helper()
+	if got != want {
+		t.Fatalf("mismatch: got=%q want=%q", got, want)
+	}
+}
+

internal/docker/config.go

@@ -0,0 +1,70 @@
+package docker
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+)
+
+const (
+	v2HubRegistryURL string = "https://registry.hub.docker.com/v2/"
+	v1RegistryURL    string = "https://index.docker.io/v1/" // Default registry
+	v2RegistryURL    string = "https://index.docker.io/v2/" // v2 registry is not supported
+)
+
+type (
+	Auth struct {
+		Auth string `json:"auth"`
+	}
+
+	Config struct {
+		Auths       map[string]Auth   `json:"auths"`
+		CredHelpers map[string]string `json:"credHelpers,omitempty"`
+	}
+)
+
+type RegistryCredentials struct {
+	Registry string
+	Username string
+	Password string
+}
+
+func NewConfig() *Config {
+	return &Config{
+		Auths:       make(map[string]Auth),
+		CredHelpers: make(map[string]string),
+	}
+}
+
+func (c *Config) SetAuth(registry, username, password string) {
+	authBytes := []byte(username + ":" + password)
+	encodedString := base64.StdEncoding.EncodeToString(authBytes)
+	c.Auths[registry] = Auth{Auth: encodedString}
+}
+
+func (c *Config) SetCredHelper(registry, helper string) {
+	c.CredHelpers[registry] = helper
+}
+
+func (c *Config) CreateDockerConfigJson(credentials []RegistryCredentials) ([]byte, error) {
+	for _, cred := range credentials {
+		if cred.Registry != "" {
+
+			if cred.Username == "" {
+				return nil, fmt.Errorf("Username must be specified for registry: %s", cred.Registry)
+			}
+			if cred.Password == "" {
+				return nil, fmt.Errorf("Password must be specified for registry: %s", cred.Registry)
+			}
+			c.SetAuth(cred.Registry, cred.Username, cred.Password)
+		}
+	}
+
+	jsonBytes, err := json.Marshal(c)
+	if err != nil {
+		return nil, errors.New("failed to serialize docker config json")
+	}
+
+	return jsonBytes, nil
+}

internal/docker/config_test.go

@@ -0,0 +1,64 @@
+package docker
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const (
+	RegistryV1        string = "https://index.docker.io/v1/"
+	RegistryV2        string = "https://index.docker.io/v2/"
+	RegistryECRPublic string = "public.ecr.aws"
+)
+
+func TestConfig(t *testing.T) {
+	c := NewConfig()
+	assert.NotNil(t, c.Auths)
+	assert.NotNil(t, c.CredHelpers)
+
+	c.SetAuth(RegistryV1, "test", "password")
+	expectedAuth := Auth{Auth: "dGVzdDpwYXNzd29yZA=="}
+	assert.Equal(t, expectedAuth, c.Auths[RegistryV1])
+
+	c.SetCredHelper(RegistryECRPublic, "ecr-login")
+	assert.Equal(t, "ecr-login", c.CredHelpers[RegistryECRPublic])
+
+	tempDir, err := ioutil.TempDir("", "docker-config-test")
+	assert.NoError(t, err)
+	defer os.RemoveAll(tempDir)
+
+	credentials := []RegistryCredentials{
+		{
+			Registry: "https://index.docker.io/v1/",
+			Username: "user1",
+			Password: "pass1",
+		},
+		{
+			Registry: "gcr.io",
+			Username: "user2",
+			Password: "pass2",
+		},
+	}
+
+	jsonBytes, err := c.CreateDockerConfigJson(credentials)
+	assert.NoError(t, err)
+
+	configPath := filepath.Join(tempDir, "config.json")
+	err = ioutil.WriteFile(configPath, jsonBytes, 0644)
+	assert.NoError(t, err)
+
+	data, err := ioutil.ReadFile(configPath)
+	assert.NoError(t, err)
+
+	var configFromFile Config
+	err = json.Unmarshal(data, &configFromFile)
+	assert.NoError(t, err)
+
+	assert.Equal(t, c.Auths, configFromFile.Auths)
+	assert.Equal(t, c.CredHelpers, configFromFile.CredHelpers)
+}

internal/gcp/tokenutil.go

@@ -0,0 +1,65 @@
+package gcp
+
+import (
+	"context"
+	"fmt"
+
+	"golang.org/x/oauth2"
+	"google.golang.org/api/iamcredentials/v1"
+	"google.golang.org/api/option"
+	"google.golang.org/api/sts/v1"
+)
+
+type staticTokenSource struct {
+	token *oauth2.Token
+}
+
+func (s *staticTokenSource) Token() (*oauth2.Token, error) {
+	return s.token, nil
+}
+
+func GetFederalToken(idToken, projectNumber, poolId, providerId string) (string, error) {
+	ctx := context.Background()
+	stsService, err := sts.NewService(ctx, option.WithoutAuthentication())
+	if err != nil {
+		return "", err
+	}
+	audience := fmt.Sprintf("//iam.googleapis.com/projects/%s/locations/global/workloadIdentityPools/%s/providers/%s", projectNumber, poolId, providerId)
+	tokenRequest := &sts.GoogleIdentityStsV1ExchangeTokenRequest{
+		GrantType:          "urn:ietf:params:oauth:grant-type:token-exchange",
+		SubjectToken:       idToken,
+		Audience:           audience,
+		Scope:              "https://www.googleapis.com/auth/cloud-platform",
+		RequestedTokenType: "urn:ietf:params:oauth:token-type:access_token",
+		SubjectTokenType:   "urn:ietf:params:oauth:token-type:id_token",
+	}
+	tokenResponse, err := stsService.V1.Token(tokenRequest).Do()
+	if err != nil {
+		return "", err
+	}
+
+	return tokenResponse.AccessToken, nil
+}
+
+func GetGoogleCloudAccessToken(federatedToken string, serviceAccountEmail string) (string, error) {
+	ctx := context.Background()
+	tokenSource := &staticTokenSource{
+		token: &oauth2.Token{AccessToken: federatedToken},
+	}
+	service, err := iamcredentials.NewService(ctx, option.WithTokenSource(tokenSource))
+	if err != nil {
+		return "", err
+	}
+
+	name := "projects/-/serviceAccounts/" + serviceAccountEmail
+	rb := &iamcredentials.GenerateAccessTokenRequest{
+		Scope: []string{"https://www.googleapis.com/auth/cloud-platform"},
+	}
+
+	resp, err := service.Projects.ServiceAccounts.GenerateAccessToken(name, rb).Do()
+	if err != nil {
+		return "", err
+	}
+
+	return resp.AccessToken, nil
+}