FROM python:3.11-slim

WORKDIR /app

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

COPY . .

# HF Spaces sets PORT=7860 by convention.
ENV PORT=7860
EXPOSE 7860

# Use gunicorn for a lightly-concurrent production server.
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--threads", "4", "--timeout", "120", "app:app"]