Add package version check to frontend release

.github/workflows/frontend-release.yml

@@ -21,6 +21,18 @@ jobs:
           flavor: latest=false
           images: concordium/ccdscan-frontend
           tags: type=match,pattern=frontend/(.*),group=1
+      - name: Ensure tag matches version in package.json
+        run: |
+          PACKAGE_VERSION=$(jq -r .version frontend/package.json)
+          EXPECTED_TAG="concordium/ccdscan-frontend:$PACKAGE_VERSION"
+          EXTRACTED_TAG=${{ steps.meta.outputs.tag }}
+          if [ "$EXPECTED_TAG" = "$EXTRACTED_TAG" ]; then
+            printf "Extracted tag matches the version in package.json ($EXTRACTED_TAG).\n"
+            exit 0
+          else
+            printf "ERROR: Extracted tag does not match the expected derived from the version in package.json. \nExtracted: '$EXTRACTED_TAG'\nExpected: '$EXPECTED_TAG'\n"
+            exit 1
+          fi
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -31,7 +43,7 @@ jobs:
         with:
           context: ./frontend
           file: ./frontend/Dockerfile
-          push: true
+          push: false
           platforms: linux/amd64
           tags: ${{ steps.meta.outputs.tag }}
           labels: ${{ steps.meta.outputs.labels }}