deploy to github pages

.github/workflows/pages.yml

@@ -0,0 +1,27 @@
+on:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: actions/checkout@v4
+      - run: nix build
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: result/
+  deploy:
+    needs: build
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4