# Use official Python runtime as a parent image
FROM python:3.10-slim

# Set working directory in container
WORKDIR /app

# Install system dependencies required for PyTorch and image processing
RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    libssl-dev \
    libffi-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better caching
COPY requirements.txt .

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

# Copy application code
COPY . .

# Expose port for Gradio
EXPOSE 7860

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD python -c "import sys; sys.exit(0)" || exit 1

# Run the application
CMD ["python", "app.py"]