add

.github/workflows/ci.yml

@@ -194,6 +194,10 @@ jobs:
         isCompactMode: true
         url: ${{ secrets.SLACK_WEBHOOK_URL }}
 
+    - name: Check whether workspace is clean
+      run: |
+        STATUS=`git status --porcelain`
+        if [ -z "$STATUS" ]; then exit 0; else exit 1; fi
 
   build-prod:
     runs-on: ubuntu-latest