Add package version check to frontend release

.github/workflows/frontend-release.yml

@@ -21,6 +21,17 @@ jobs:
           flavor: latest=false
           images: concordium/ccdscan-frontend
           tags: type=match,pattern=frontend/(.*),group=1
+      - name: Ensure tag matches version in package.json
+        run: |
+          EXPECTED=$(jq -r .version frontend/package.json)
+          EXTRACTED="${{ steps.meta.outputs.version }}"
+          if [ "$EXPECTED" = "$EXTRACTED" ]; then
+            printf "Extracted version matches the version in package.json ($EXTRACTED).\n"
+            exit 0
+          else
+            printf "ERROR: Extracted version does not match the version in package.json. \nExtracted: '$EXTRACTED'\nExpected: '$EXPECTED'\n"
+            exit 1
+          fi
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -31,7 +42,7 @@ jobs:
         with:
           context: ./frontend
           file: ./frontend/Dockerfile
-          push: true
+          push: false
           platforms: linux/amd64
           tags: ${{ steps.meta.outputs.tag }}
           labels: ${{ steps.meta.outputs.labels }}