FROM python:3.10-slim

# Install system dependencies for OpenCV (headless version)
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy requirements first to leverage Docker layer caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy all repository files (includes dataset/models)
COPY . .

# Set environment variables for production execution
ENV PORT=7860
ENV HEADLESS=true

# Expose port (Hugging Face default)
EXPOSE 7860

# Run Flask using Gunicorn (production WSGI server)
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--timeout", "120", "--chdir", "board finder.v1i.yolov11/chess", "server:app"]