FROM python:3.12-slim

WORKDIR /app

ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

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

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

RUN mkdir -p /app/storage/templates /app/storage/ref_files /app/storage/results

CMD ["celery", "-A", "app.tasks.celery_app", "worker", "--loglevel=info", "--concurrency=4"]