config: Update workflow file to build image on specific version release

Author: dinushchathurya

.github/workflows/action.yaml

@@ -3,20 +3,34 @@ name: Build and Push Docker Image for Helm Client
 on:
   push:
     branches:
+      - main
       - 'v*.*.*'
+  pull_request:
+    types: [closed]
 
 jobs:
-  build-and-publish-image: 
+  build-and-publish-image:
     runs-on: ubuntu-latest
-    steps:
 
+    steps:
       - name: Checkout
         uses: actions/checkout@v3
-         
+
       - name: Extract branch name
-        shell: bash
-        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
         id: branch_name
+        shell: bash
+        run: |
+          echo "branch=${GITHUB_REF#refs/heads/}" >> $GITHUB_OUTPUT
+
+      - name: Set Docker tag
+        id: docker_tag
+        shell: bash
+        run: |
+          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
+            echo "tag=latest" >> $GITHUB_OUTPUT
+          elif [[ "${{ github.ref }}" == refs/heads/v* ]]; then
+            echo "tag=${{ steps.branch_name.outputs.branch }}" >> $GITHUB_OUTPUT
+          fi
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
@@ -30,9 +44,17 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
-      - name: Build and push
+      - name: Build and push Docker image
         uses: docker/build-push-action@v4
         with:
           push: true
           platforms: linux/amd64
-          tags: ${{ secrets.DOCKER_REPO }}/helm-client:${{ steps.branch_name.outputs.branch }}
+          tags: ${{ secrets.DOCKER_REPO }}/helm-client:${{ steps.docker_tag.outputs.tag }}
+
+      - name: Update Docker Hub description
+        if: github.ref == 'refs/heads/main'
+        uses: peter-evans/dockerhub-description@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          repository: ${{ secrets.DOCKER_REPO }}/helm-client