Update deploy.yml and added dependabot.yml

.github/workflows/deploy.yml

@@ -2,14 +2,29 @@ name: fastn build to update vh_pages branch
 
 on:
   push:
-    branches: [ main ]
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
   workflow_dispatch:
 
 jobs:
   fastn-build:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
       - name: Install fastn
         run: source <(curl -fsSL https://fastn.com/install.sh)
-      - name: Build the pages with fastn
-        run: fastn build 
+      - name: Build pages with fastn
+        run: fastn build --offline
+      - name: Deploy to vh_page branch
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./.build
+          publish_branch: vh_page
+          force_orphan: true
+          full_commit_message: ${{ github.event.pull_request.head.sha }}