# syntax=docker/dockerfile:1.4
FROM python:3.12-slim

# Allow configuring a faster pip index at build time (default: TUNA mirror)
ARG PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_INDEX_URL=$PIP_INDEX_URL

WORKDIR /app

# Copy only requirements first to maximise layer cache
COPY requirements.txt ./

# Use BuildKit cache mount for pip to avoid re-downloading wheels between builds.
# Build with: DOCKER_BUILDKIT=1 docker build --build-arg PIP_INDEX_URL=... -t ginger .
RUN --mount=type=cache,target=/root/.cache/pip \
    python -m pip install --upgrade pip setuptools wheel && \
    python -m pip install --prefer-binary -r requirements.txt

COPY . .

EXPOSE 5000
CMD ["uwsgi", "--ini", "/app/uwsgi.ini"]