# 使用多阶段构建，先安装构建依赖
FROM python:3.9-slim AS builder

# 设置时区
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

# 设置工作目录
WORKDIR /build

# 安装netcat用于网络连接检查
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    build-essential \
    default-libmysqlclient-dev \
    netcat-openbsd \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# 复制项目依赖文件
COPY requirements.txt .

# 安装Python依赖
RUN pip install --no-cache-dir -r requirements.txt

# 最终阶段，使用轻量镜像
FROM python:3.9-slim

# 设置时区
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

# 安装运行时依赖
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    default-libmysqlclient-dev \
    netcat-openbsd \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# 设置工作目录
WORKDIR /app

# 从构建阶段复制已安装的依赖
COPY --from=builder /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# 复制应用代码
COPY . .

# 确保脚本可执行
RUN chmod +x entrypoint.sh

# 设置环境变量
ENV PYTHONPATH=/app:$PYTHONPATH
ENV PORT=8000
ENV HOST=0.0.0.0

# 暴露端口
EXPOSE 8000

# 添加健康检查
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:8000/health || exit 1

# 设置入口点
ENTRYPOINT ["./entrypoint.sh"]