change yml

.github/workflows/sync.yml

@@ -7,7 +7,21 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x]
     steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: npm install, build
+      run: |
+        npm install
+        npm run build --if-present
+      env:
+        CI: true
     - name: Sync to Gitee
       uses: wearerequired/git-mirror-action@master
       env: