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| # 使用官方 Node.js 20 镜像作为基础 | |
| FROM node:20-alpine | |
| # 设置工作目录 | |
| WORKDIR /app | |
| # 设置国内镜像源加速npm安装 | |
| RUN npm config set registry https://registry.npmmirror.com | |
| # 拷贝 package.json 并安装依赖 | |
| COPY package.json ./ | |
| RUN npm install | |
| # 拷贝服务端代码 | |
| COPY server.js ./ | |
| # 暴露端口 | |
| EXPOSE 3000 | |
| # 启动服务 | |
| CMD ["npm", "start"] |