modernise deployment

Author: davehorsfall

.github/workflows/build_and_deploy.yml

@@ -0,0 +1,57 @@
+name: Build and Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+          run_install: true
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: "pnpm"
+
+      - name: Build project
+        run: |
+          pnpm build
+          touch dist/.nojekyll
+
+      - name: Upload build output
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: dist
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4