Update node.js.yml

Author: CWH6

.github/workflows/node.js.yml

@@ -10,6 +10,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Install Dependencies
+        run: npm install
+
+      - name: Build
+        run: npm run build
+
       - name: Deploy to GitHub Pages
         uses: JamesIves/github-pages-deploy-action@v4
         with: