FROM python:3.12-slim

WORKDIR /app

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

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

COPY app.py .

EXPOSE 5000

# Run init_db() once (creates the tasks table) then start gunicorn.
# Same pattern as the first assignment's Dockerfile.
CMD ["sh", "-c", "python -c 'from app import init_db; init_db()' && gunicorn --bind 0.0.0.0:5000 --workers 2 app:app"]