# 使用 Node 基础镜像
FROM node:18-alpine AS builder

WORKDIR /app
COPY package*.json pnpm-lock.yaml ./
RUN npm install -g pnpm && pnpm install --frozen-lockfile

# 复制源码并构建
COPY . .
RUN pnpm run build

# 生产阶段：只复制必要文件
FROM node:18-alpine

WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/server ./server
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/pnpm-lock.yaml ./
RUN npm install -g pnpm && pnpm install --prod --frozen-lockfile

# 暴露端口（与 Express 监听端口一致）
EXPOSE 3000

# 启动 Express 服务（使用 pnpm start 或 node server/index.js）
CMD ["pnpm", "start"]
# 或直接 CMD ["node", "server/index.js"]