FROM python:3.11-slim

WORKDIR /app

# 系统依赖：libheif 用于 HEIC/HEIF 解码（图片修正增强）
RUN apt-get update && apt-get install -y --no-install-recommends \
    libheif1 libheif-dev \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt \
    && pip install --no-cache-dir pillow-heif

COPY . .

ENV PORT=7860
ENV PYTHONUNBUFFERED=1
ENV XTC_DB_PATH=/data/xtc.db
EXPOSE 7860

# 持久化目录（HF Spaces 自动挂载 /data；本地 docker run 时可 -v 挂载）
RUN mkdir -p /data
VOLUME ["/data"]

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]