diff --git a/.drone.yml b/.drone.yml
index af894db..4aa4286 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -29,27 +29,6 @@ pipeline:
     commands:
       - make build_linux_amd64
 
-  build_linux_i386:
-    image: appleboy/golang-testing:1.9.2
-    pull: true
-    group: build
-    commands:
-      - make build_linux_i386
-
-  build_linux_arm64:
-    image: appleboy/golang-testing:1.9.2
-    pull: true
-    group: build
-    commands:
-      - make build_linux_arm64
-
-  build_linux_arm:
-    image: appleboy/golang-testing:1.9.2
-    pull: true
-    group: build
-    commands:
-      - make build_linux_arm
-
   release:
     image: appleboy/golang-testing:1.9.2
     pull: true
@@ -59,19 +38,6 @@ pipeline:
       event: [ tag ]
       local: false
 
-  publish_alpine:
-    image: plugins/docker
-    group: release
-    pull: true
-    dockerfile: Dockerfile.alpine
-    secrets: [ docker_username, docker_password ]
-    default_tags: true
-    default_suffix: alpine
-    repo: ${DRONE_REPO}
-    when:
-      event: [ push, tag ]
-      local: false
-
   publish_linux_amd64:
     image: plugins/docker:17.05
     pull: true
@@ -84,45 +50,6 @@ pipeline:
       event: [ push, tag ]
       local: false
 
-  publish_linux_i386:
-    image: plugins/docker:17.05
-    pull: true
-    secrets: [ docker_username, docker_password ]
-    group: release
-    repo: ${DRONE_REPO}
-    auto_tag: true
-    auto_tag_suffix: i386
-    dockerfile: Dockerfile.i386
-    when:
-      event: [ push, tag ]
-      local: false
-
-  publish_linux_arm64:
-    image: plugins/docker:17.05
-    pull: true
-    secrets: [ docker_username, docker_password ]
-    group: release
-    repo: ${DRONE_REPO}
-    auto_tag: true
-    auto_tag_suffix: arm64
-    dockerfile: Dockerfile.arm64
-    when:
-      event: [ push, tag ]
-      local: false
-
-  publish_linux_arm:
-    image: plugins/docker:17.05
-    pull: true
-    secrets: [ docker_username, docker_password ]
-    group: release
-    repo: ${DRONE_REPO}
-    auto_tag: true
-    auto_tag_suffix: arm
-    dockerfile: Dockerfile.arm
-    when:
-      event: [ push, tag ]
-      local: false
-
   release_tag:
     image: plugins/github-release
     secrets: [ github_release_api_key ]
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
deleted file mode 100644
index e4b5481..0000000
--- a/Dockerfile.alpine
+++ /dev/null
@@ -1,13 +0,0 @@
-FROM alpine:3.6
-
-LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
-  org.label-schema.name="Drone SCP" \
-  org.label-schema.vendor="Bo-Yi Wu" \
-  org.label-schema.schema-version="1.0"
-
-RUN apk add -U --no-cache ca-certificates && \
-  rm -rf /var/cache/apk/*
-
-ADD release/linux/amd64/drone-scp /bin/
-
-ENTRYPOINT ["/bin/drone-scp"]
diff --git a/Dockerfile.arm b/Dockerfile.arm
deleted file mode 100644
index 5eceb06..0000000
--- a/Dockerfile.arm
+++ /dev/null
@@ -1,10 +0,0 @@
-FROM plugins/base:multiarch
-
-LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
-  org.label-schema.name="Drone SCP" \
-  org.label-schema.vendor="Bo-Yi Wu" \
-  org.label-schema.schema-version="1.0"
-
-ADD release/linux/amd64/drone-scp /bin/
-
-ENTRYPOINT ["/bin/drone-scp"]
diff --git a/Dockerfile.arm64 b/Dockerfile.arm64
deleted file mode 100644
index 6f8cd81..0000000
--- a/Dockerfile.arm64
+++ /dev/null
@@ -1,10 +0,0 @@
-FROM plugins/base:multiarch
-
-LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
-  org.label-schema.name="Drone SCP" \
-  org.label-schema.vendor="Bo-Yi Wu" \
-  org.label-schema.schema-version="1.0"
-
-ADD release/linux/arm64/drone-scp /bin/
-
-ENTRYPOINT ["/bin/drone-scp"]
diff --git a/Dockerfile.i386 b/Dockerfile.i386
deleted file mode 100644
index 131f955..0000000
--- a/Dockerfile.i386
+++ /dev/null
@@ -1,10 +0,0 @@
-FROM plugins/base:multiarch
-
-LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
-  org.label-schema.name="Drone SCP" \
-  org.label-schema.vendor="Bo-Yi Wu" \
-  org.label-schema.schema-version="1.0"
-
-ADD release/linux/i386/drone-scp /bin/
-
-ENTRYPOINT ["/bin/drone-scp"]
diff --git a/Makefile b/Makefile
index f92b702..30f20f1 100644
--- a/Makefile
+++ b/Makefile
@@ -97,15 +97,6 @@ release-check:
 build_linux_amd64:
 	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/amd64/$(DEPLOY_IMAGE)
 
-build_linux_i386:
-	CGO_ENABLED=0 GOOS=linux GOARCH=386 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/i386/$(DEPLOY_IMAGE)
-
-build_linux_arm64:
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/arm64/$(DEPLOY_IMAGE)
-
-build_linux_arm:
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -a -tags '$(TAGS)' -ldflags '$(EXTLDFLAGS)-s -w $(LDFLAGS)' -o release/linux/arm/$(DEPLOY_IMAGE)
-
 docker_image:
 	docker build -t $(DEPLOY_ACCOUNT)/$(DEPLOY_IMAGE) .