use working-directory for setup-node step

Author: lihebi

.github/workflows/node.js.yml

@@ -24,10 +24,9 @@ jobs:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v2
+      working-directory: ./app
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'npm'
-    - working-directory: ./app
-      run: pwd
     - run: npm run build:all
       working-directory: ./app