detail in vitepress document But directly use it would has problem becasue of environment.We need to do the following

1. add .github/workflows/deploy.yml in project root

   
    # .github/workflows/deploy.yml
   
    name: Deploy VitePress site to Pages
   
    on:
    push:
        branches: [main] 
    workflow_dispatch:
   
    permissions:
    contents: read
    pages: write
    id-token: write
   
    concurrency:
    cancel-in-progress: false
    group: pages
   
    jobs:
    build:
        runs-on: ubuntu-latest
        steps:
        - uses: actions/checkout@v4
        - uses: actions/setup-node@v4
            with:
            node-version: 20
            cache: npm
   
        - name: Install dependencies and build
            run: |
            npm install
            npm run docs:build 
   
        - name: Upload artifact
            uses: actions/upload-pages-artifact@v3
            with:
            # 确保这里是 VitePress 的默认输出目录
            path: docs/.vitepress/dist 
   
    deploy:
        environment:
        name: github-pages
        url: $
        needs: build
        runs-on: ubuntu-latest
        steps:
        - name: Deploy to GitHub Pages
            uses: actions/deploy-pages@v4
            id: deployment
   

2. docs/.vitepress/config.mts, add base: '/reopsitory-name/' in defineConfig

3. package.json add devDependencies

    {
    "scripts": {
        "docs:dev": "vitepress dev docs",
        "docs:build": "vitepress build docs",
        "docs:preview": "vitepress preview docs"
    },
    "devDependencies": {
        "vitepress": "^1.6.4"
    }
    }
   

4. npm installgenerate "package-lock.json"