prepare workflow for tags (#6)

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

Author: NilashishC

.github/workflows/publish_image.yml

@@ -2,12 +2,17 @@
 name: Publish Image
 
 concurrency:
-    group: ${{ github.head_ref || github.run_id }}
-    cancel-in-progress: true
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
 
 on:
+  release:
+    types: [published]
   workflow_dispatch:
 
+env:
+  image: ghcr.io/nilashishc/ansible-creator-service
+
 jobs:
   build-test:
     runs-on: ubuntu-latest
@@ -24,6 +29,15 @@ jobs:
             password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build the container image for ansible-creator-service and publish it
+        if: github.event_name == 'workflow_dispatch'
+        run: |
+          docker build -f Containerfile -t ${{ env.image }}:latest .
+
+      - name: Build the container image for ansible-creator-service and publish it (when tagged)
+        if: github.event_name == 'release'
+        run: |
+          docker build -f Containerfile -t ${{ env.image }}:latest -t ${{ env.image }}:${{ github.ref_name }} .
+
+      - name: Push image with all tags
         run: |
-          docker build -f Containerfile -t ghcr.io/nilashishc/ansible-creator-service:latest .
-          docker push ghcr.io/nilashishc/ansible-creator-service:latest
+          docker push ${{ env.image }} --all-tags