# 后端 Python 服务
FROM python:3.11-slim

WORKDIR /app

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

# 安装依赖
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt --timeout 120

# 复制源码
COPY backend/ ./

# 暴露端口
EXPOSE 8000

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