# Use official Python base image
FROM python:3.10-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set working directory
WORKDIR /app

# Install OS-level dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    libgl1-mesa-glx \
    && rm -rf /var/lib/apt/lists/*

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

# Copy app code and model
COPY app.py naxi_lowlight.keras /app/

# The CMD command MUST specify port 7860 for Hugging Face Spaces
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]