FROM python:3.11-slim

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

WORKDIR /app

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

COPY requirements.txt ./
RUN pip install -r requirements.txt

COPY . .

# Default command runs the worker; docker-compose overrides this for the beat scheduler service.
CMD ["celery", "-A", "app.workers.celery_app.celery_app", "worker", "--loglevel=info"]