add beta workflow

Author: wbglaeser

.github/workflows/deploy-beta.yml

@@ -0,0 +1,32 @@
+name: Deploy BETA to GitHub Pages
+
+on:
+  push:
+    branches:
+      - beta
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20.11.1"
+
+      - name: Install dependencies
+        run: npm install
+  
+      - name: Build the project
+        run: npm run build
+
+      - name: Deploy with gh-pages (to /beta folder)
+        run: |
+          git remote set-url origin https://git:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
+          npm run deploy -- --dest beta -u "github-actions-bot <[email protected]>"
+        env:
+          GITHUB_TOKEN: ${{ secrets.ACTIONS_DEPLOY_KEY }}