# ── Stage 1: build ───────────────────────────────────────────────────────────
FROM python:3.11-slim AS builder

RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc build-essential cmake libpq-dev libffi-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /build

RUN pip install --no-cache-dir --upgrade pip wheel setuptools

COPY requirements.txt .
# 直接打包安装到标准的 site-packages 路径中，方便后面拷贝
RUN pip install --no-cache-dir --user -r requirements.txt


# ── Stage 2: runtime ─────────────────────────────────────────────────────────
FROM python:3.11-slim

RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 curl \
    && rm -rf /var/lib/apt/lists/*

# 【核心修改】直接从 builder 的用户目录下把装好的第三方库拷贝过来
COPY --from=builder /root/.local /root/.local

# 【核心修改】将拷贝过来的库路径加入到环境变量中，确保 Python 100% 能找到它们
ENV PATH=/root/.local/bin:$PATH
ENV PYTHONPATH=/root/.local/lib/python3.11/site-packages:$PYTHONPATH

WORKDIR /app
COPY . .

RUN chmod +x entrypoint.sh

# Non-root user
RUN useradd -m appuser && chown -R appuser /app
# 确保新创建的 appuser 也有权限读取拷贝过来的第三方库
RUN cp -R /root/.local /home/appuser/ && chown -R appuser:appuser /home/appuser/.local

ENV PATH=/home/appuser/.local/bin:$PATH
ENV PYTHONPATH=/home/appuser/.local/lib/python3.11/site-packages:$PYTHONPATH

USER appuser

EXPOSE 8000

ENTRYPOINT ["./entrypoint.sh"]