Dockerfile

FROM python:3.9-slim

WORKDIR /app

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

# Copy code
COPY . .

# Create non-root user for security
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

EXPOSE 7860

# Use Gunicorn for production-grade performance
CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app", "--workers", "2", "--threads", "4", "--timeout", "120"]