FROM python:3.10-slim

WORKDIR /app

# 设置环境变量
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    FLASK_ENV=production

# 安装系统依赖
RUN apt-get update && apt-get install -y \
    gcc \
    default-libmysqlclient-dev \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

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

# 复制项目文件
COPY . .

# 创建必要目录
RUN mkdir -p /app/logs /name

# 创建非root用户
RUN groupadd -r appuser && useradd -r -g appuser -d /app -s /sbin/nologin appuser \
    && chown -R appuser:appuser /app

USER appuser

# 暴露端口
EXPOSE 5000

# 健康检查
HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:5000/ || exit 1

# 使用gunicorn启动（生产环境）
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "4", "--threads", "2", "--timeout", "120", "--access-logfile", "-", "--error-logfile", "-", "app:app"]