FROM python:3.12-slim

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

WORKDIR /app

COPY backend/requirements.txt /tmp/requirements.txt
RUN pip install --upgrade pip \
    && pip install -r /tmp/requirements.txt \
    && rm -f /tmp/requirements.txt

RUN python -c "import fastapi, uvicorn, psycopg, sqlalchemy, redis, jwt, passlib, httpx, alembic; print('backend dependency check ok')"

RUN mkdir -p /opt/yg-ft/logs/backend /data/yg-ft \
    && chmod -R 0775 /opt/yg-ft /data/yg-ft

EXPOSE 8000

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