FROM python:3.11-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt gunicorn

# Copy application files
COPY app.py model.py best_model.pth ./

# Expose port (internal, Nginx will handle external HTTPS)
EXPOSE 8000

# Run with Gunicorn (production WSGI server)
CMD ["gunicorn", "-w", "1", "-b", "0.0.0.0:8000", "--timeout", "300", "--access-logfile", "-", "--error-logfile", "-", "app:app"]