adding nexus go plugin impl

README.md

@@ -18,7 +18,7 @@ docker: Error response from daemon: Container command
 '/bin/drone-nexus-publish' not found or does not exist..
 ```
 
-## Usage
+## Usage for Single file Upload
 
 ```bash
 docker run --rm \
@@ -36,7 +36,7 @@ docker run --rm \
 
 
 
-In Harness CI,
+In Harness CI, YAML for single file Upload
 ```yaml
               - step:
                   type: Plugin
@@ -54,3 +54,53 @@ In Harness CI,
                       repository: maven-releases
                       attributes: "-CgroupId=org.testing -CartifactId=example -Cversion=1.0 -Aextension=jar -Aclassifier=bin"
 ```
+
+## Usage for Multi file Upload
+```bash
+docker run --rm --network host \
+    -e PLUGIN_NEXUS_VERSION='nexus3' \
+    -e PLUGIN_SERVER_URL='43.204.190.241:8081' \
+    -e PLUGIN_USERNAME='nexususer01' \
+    -e PLUGIN_PASSWORD='some!secret@abc' \
+    -e PLUGIN_FORMAT='maven2' \
+    -e PLUGIN_GROUP_ID='test01' \
+    -e PLUGIN_PROTOCOL='http' \
+    -e PLUGIN_ARTIFACTS='[{"file": "file1.yaml", "classifier": "bin", "groupId": "test", "artifactId": "config-yaml-1", "type": "yaml", "version": "1"}, {"file": "file2.yaml", "classifier": "src", "groupId": "test", "artifactId": "all-config-yaml-2", "type": "yaml", "version": "2"}]' \
+    -e PLUGIN_REPOSITORY='stage-dev-repo' \
+      -v $(pwd):$(pwd) \
+      -w $(pwd) \
+    harnesscommunity/drone-nexus-publish
+```
+
+In Harnes CI, YAML for multi file Upload
+```yaml
+- step:
+    type: Plugin
+    name: Plugin_1
+    identifier: Plugin_1
+    spec:
+      connectorRef: Docker_Hub_Anonymous
+      image: harnesscommunity/drone-nexus-publish:latest
+      settings:
+        nexus_version: nexus3
+        server_url: 43.204.190.241:8081
+        username: <+secrets.getValue("nexus_plugin_username")>
+        password: <+secrets.getValue("nexus_plugin_password")>
+        format: maven2
+        repository: stage-dev-repo
+        group_id: test01
+        protocol: http
+        artifacts:
+          - file: file1.yaml
+            classifier: bin
+            groupId: test
+            artifactId: config-yaml-1
+            type: yaml
+            version: "1"
+          - file: file2.yaml
+            classifier: src
+            groupId: test
+            artifactId: all-config-yaml-2
+            type: yaml
+            version: "2"
+```