ci: auto-publish book to gh-pages on push to main

Author: dukedaily

.github/workflows/publish.yml

@@ -0,0 +1,36 @@
+name: Publish book
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch: {}
+
+permissions:
+  contents: write
+
+concurrency:
+  group: publish-gh-pages
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build book
+        run: npm run build
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./_book
+          commit_message: "Publish from ${{ github.sha }}"