# 多阶段构建
# 阶段1: 构建前端
FROM node:18-alpine as frontend-builder

WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# 阶段2: 构建后端
FROM node:18-alpine

WORKDIR /app
COPY backend/package*.json ./
RUN npm install --production

# 复制后端代码
COPY backend/ ./
# 从前端构建阶段复制构建结果
COPY --from=frontend-builder /app/frontend/build ./public

# 创建数据目录
RUN mkdir -p /app/data

# 暴露端口
EXPOSE 5000

# 启动命令
CMD ["node", "index.js"]