Add GitHub Actions workflow for Docusaurus deployment

Author: EXStevens

.github/workflows/deploy-docusaurus.yml

@@ -0,0 +1,41 @@
+name: Deploy Docusaurus site
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-deploy:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      pages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+      # Docusaurus 3 要求 Node >= 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Docusaurus site
+        run: npm run build
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: build
+
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v4