ARG PYTHON_BASE_IMAGE=python:3.12-slim
FROM ${PYTHON_BASE_IMAGE}

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app/backend

ARG PIP_INDEX_URL=https://pypi.org/simple
ARG PIP_TRUSTED_HOST=

COPY backend/requirements.txt ./requirements.txt
RUN if [ -n "${PIP_INDEX_URL}" ]; then pip config set global.index-url "${PIP_INDEX_URL}"; fi \
    && if [ -n "${PIP_TRUSTED_HOST}" ]; then pip config set global.trusted-host "${PIP_TRUSTED_HOST}"; fi \
    && pip install --upgrade pip \
    && pip install -r requirements.txt

COPY backend/ /app/backend/

EXPOSE 8000

CMD ["python", "main.py"]