FROM python:3.9-slim

WORKDIR /app

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

COPY . .

EXPOSE 7860

# START: MAX CONCURRENCY GUNICORN COMMAND
# Increased the number of stable 'gthread' workers to 25.
# This significantly boosts concurrent user capacity while maintaining stability.
CMD ["gunicorn", "--workers", "8", "--worker-class", "gthread", "--bind", "0.0.0.0:7860", "--timeout", "720", "app:app"]
# END: MAX CONCURRENCY COMMAND