Dockerfile.backend-dev

# Backend Dev Dockerfile — 挂载本地代码热更新，不需要每次 build
FROM python:3.10-slim-bookworm

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    TZ=Asia/Shanghai

WORKDIR /app

# 系统依赖（中文字体 + PDF 工具）
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        curl fontconfig xvfb && \
    for attempt in 1 2 3; do \
        apt-get install -y --no-install-recommends fonts-noto-cjk && break || \
        { [ "${attempt}" = "3" ] && apt-get install -y --no-install-recommends fonts-wqy-zenhei; true; }; \
    done && \
    apt-get install -y --no-install-recommends wkhtmltopdf && \
    fc-cache -fv && \
    rm -rf /var/lib/apt/lists/*

# Python 依赖（只装一次，之后代码通过 volume 挂载）
COPY pyproject.toml ./
RUN pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple && \
    pip install --prefer-binary . -i https://pypi.tuna.tsinghua.edu.cn/simple && \
    pip install --prefer-binary pdfkit -i https://pypi.tuna.tsinghua.edu.cn/simple

EXPOSE 8000