Dockerfile

FROM python:3.9-slim

WORKDIR /app

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

COPY . .

# Create instance directory for SQLite
RUN mkdir -p instance && chmod 777 instance

EXPOSE 7860

CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app"]