# ==========================================
# Flying-Translation 云端 API 容器配置
# ==========================================
# 优化的 Dockerfile，基于 FastAPI 最佳实践
# ==========================================

# 阶段1: 构建阶段
FROM python:3.10-slim as builder

# 设置工作目录
WORKDIR /app

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

# 复制依赖文件
COPY requirements.txt .

# 安装 Python 依赖（使用国内镜像加速）
RUN pip install --no-cache-dir --user -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

# 阶段2: 生产镜像
FROM python:3.10-slim

# 设置环境变量
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONFAULTHANDLER=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# 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/* \
    && useradd --create-home --shell /bin/bash appuser

# 复制构建好的 Python 包
COPY --from=builder /root/.local /home/appuser/.local

# 设置 PATH
ENV PATH=/home/appuser/.local/bin:$PATH

# 复制应用代码
WORKDIR /app
COPY --chown=appuser:appuser . .

# 切换到非 root 用户
USER appuser

# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# 暴露端口
EXPOSE 7860

# 启动命令
CMD ["python", "-m", "uvicorn", "app:app", \
     "--host", "0.0.0.0", \
     "--port", "7860", \
     "--workers", "2", \
     "--log-level", "info", \
     "--access-log"]