# 智能项目定价模型 - 后端 Dockerfile
# 遵循瑞小美部署规范：使用具体版本号，配置阿里云镜像源

# 构建阶段
FROM python:3.11.9-slim AS builder

# 配置阿里云 APT 源
RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list.d/debian.sources

# 安装构建依赖
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libffi-dev \
    && rm -rf /var/lib/apt/lists/*

# 配置阿里云 pip 源
RUN pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/ \
    && pip config set global.trusted-host mirrors.aliyun.com

# 创建虚拟环境
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# 复制依赖文件并安装
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# 运行阶段
FROM python:3.11.9-slim AS runner

# 配置阿里云 APT 源
RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list.d/debian.sources

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

# 创建非 root 用户
RUN groupadd -r appgroup && useradd -r -g appgroup appuser

# 设置工作目录
WORKDIR /app

# 从构建阶段复制虚拟环境
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# 复制应用代码
COPY --chown=appuser:appgroup . .

# 设置环境变量
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    TZ=Asia/Shanghai

# 切换到非 root 用户
USER appuser

# 暴露端口
EXPOSE 8000

# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# 启动命令
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]