update build for previews

Author: artcz

.github/workflows/preview.yml

@@ -13,9 +13,21 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+
+      - name: Set timestamp for build/deploy
+        run: echo "TIMESTAMP=$(date +%Y%m%d%H%M%S)" >> $GITHUB_ENV
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
         with:
-          sparse-checkout: |
-            build
+          node-version: 20
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: make install
+
+      - name: Build the website
+        run: make build
 
       - name: Set up SSH key
         uses: webfactory/[email protected]