chore: add workflow action

.github/workflows/build-demo.yml

@@ -0,0 +1,56 @@
+# action 的名称
+name: Deploy GitHub Pages
+
+# 触发条件：在 push 到 main 分支后
+on:
+  push:
+    branches:
+      - master
+
+# 任务
+jobs:
+  build-and-deploy:
+    # 服务器环境：最新版 Ubuntu
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [14]
+    steps:
+      # 拉取代码
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Cache .pnpm-store
+        uses: actions/cache@v1
+        with:
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-node${{ matrix.node-version }}-${{ hashFiles('**/pnpm-lock.yaml') }}
+
+      - name: Install pnpm
+        run: curl -f https://get.pnpm.io/v6.16.js | node - add --global pnpm@6
+
+      - name: Install Dependencies
+        run: pnpm install
+
+      # 生成静态文件
+      - name: Build
+        run: pnpm run docs:build
+
+      # 部署到 GitHub Pages
+      - name: Deploy
+        # 使用别人写好的一个 action
+        uses: JamesIves/github-pages-deploy-action@releases/v3
+        with:
+          # 这里的 ACCESS_TOKEN 名字需要和下文中的相对应
+          ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+          # 打包后的文件部署到哪个分支上
+          BRANCH: docs
+          # 打包后的文件在哪里
+          FOLDER: docs/.vuepress/dist