tag on release event

.github/workflows/build.yaml

@@ -45,7 +45,7 @@ jobs:
           path: ./target
 
   publish:
-    if: github.ref == 'refs/heads/dev'
+    if: github.ref == 'refs/heads/dev' || github.event_name == 'release'
     runs-on: ubuntu-latest
     needs: build
     permissions:
@@ -87,6 +87,11 @@ jobs:
         uses: docker/metadata-action@v5.5.1
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            # Default tag for pushes to 'dev' branch
+            ${{ github.event_name == 'push' && 'dev' }}
+            # Use release tag if available
+            ${{ github.event_name == 'release' && 'prod' }}
 
       # Build and push Docker image with Buildx
       # https://github.com/docker/build-push-action