# Hugging Face Space 用的 Docker 配置
FROM python:3.11-slim

# HF Space 容器以 uid 1000 运行，建非 root 用户是官方要求的最佳实践
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

WORKDIR /home/user/app

# 先装依赖（这一层能被 Docker 缓存，改代码时不用重装）
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# 再拷贝代码
COPY --chown=user . .

# HF Space 默认期望应用监听 7860 端口
EXPOSE 7860
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]