容器化第一步是写 Dockerfile。填入基础镜像、工作目录、暴露端口与启动命令,本工具拼出标准 Dockerfile 供复制到项目根目录。
FROM node:20 AS build WORKDIR /app COPY . . RUN npm ci && npm run build FROM node:20-alpine COPY --from=build /app/dist /app CMD ["npm","start"]