# syntax=docker/dockerfile:1
# 国内拉基础镜像慢时：docker compose build --build-arg PY_BASE=docker.m.daocloud.io/library/python:3.11-slim
ARG PY_BASE=python:3.11-slim
FROM ${PY_BASE}

WORKDIR /app

# 默认清华 PyPI；海外可：docker compose build --build-arg PIP_INDEX_URL=https://pypi.org/simple
ARG PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
ENV PIP_INDEX_URL=${PIP_INDEX_URL} \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    PIP_DEFAULT_TIMEOUT=120

COPY requirements.txt ./
# BuildKit 缓存加速重复构建；需 Docker 20.10+（compose 默认开 BuildKit）
RUN --mount=type=cache,target=/root/.cache/pip \
    pip install -r requirements.txt

COPY . .

EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]