FROM python:3.11-slim AS dependencies

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    APP_DIR=/app

WORKDIR /app

RUN apt-get update \
    && apt-get install --no-install-recommends -y \
        gcc \
        libc6-dev \
        libgomp1 \
        linux-libc-dev \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt ./requirements.txt
RUN pip install --no-cache-dir -r requirements.txt \
    && apt-get purge -y gcc libc6-dev linux-libc-dev \
    && apt-get autoremove -y \
    && rm -rf /var/lib/apt/lists/*

FROM dependencies AS migrator

COPY app/ ./app/
COPY migrations/ ./migrations/
COPY alembic.ini ./alembic.ini

CMD ["alembic", "-c", "alembic.ini", "upgrade", "head"]

FROM dependencies AS runtime

RUN pip uninstall -y alembic

COPY app/ ./app/
COPY datafactory/ ./datafactory/
COPY wsgi.py gunicorn_config.py ./

RUN mkdir -p /app/logs /data/upload /data/archive

EXPOSE 5500

CMD ["gunicorn", "--config", "gunicorn_config.py", "wsgi:application"]