Change deployment mechanism

.github/workflows/deploy.yml

@@ -0,0 +1,60 @@
+name: deploy
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+# Allow only one concurrent deployment, skipping runs queued between the run
+# in-progress and latest queued. Do not cancel in-progress runs as we want to
+# allow these production deployments to complete.
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Build
+        run: yarn build
+
+      - name: Add custom domain
+        run: |
+          touch out/.nojekyll
+          echo www.getoutline.com > out/CNAME
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: out
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4