Dockerfile

# Use Python 3.11 (TensorFlow compatible)
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (for caching)
COPY requirements.txt .

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

# Copy application files
COPY app.py .
COPY models/ models/

# Expose port (HF Spaces expects 7860)
EXPOSE 7860

# Set environment variables
ENV FLASK_APP=app.py
ENV PYTHONUNBUFFERED=1

# Health check (port 7860 for HF Spaces)
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
  CMD python -c "import requests; requests.get('http://localhost:7860/health')"

# Run with gunicorn (HF Spaces requires port 7860)
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--timeout", "120", "app:app"]