Update docker-image.yml (#92)

.github/workflows/docker-image.yml

@@ -13,6 +13,17 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build Angular app
+        run: npm run build --prod
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2