Build app on push

.github/workflows/node.js.yml

@@ -11,7 +11,6 @@ on:
 
 jobs:
   build-lib:
-
     runs-on: ubuntu-latest
 
     defaults:
@@ -33,3 +32,27 @@ jobs:
         cache-dependency-path: lib/package-lock.json
     - run: npm ci
     - run: npm run build --if-present
+
+  build-app:
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: ./app
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+        cache-dependency-path: app/package-lock.json
+    - run: npm ci
+    - run: npm start
+