# Use Python 3.10 slim image for smaller size
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies required for PyTorch and other packages
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

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

# Install Python dependencies
# Use CPU-only PyTorch to reduce image size
RUN pip install --no-cache-dir -r requirements.txt

# Copy the entire application
COPY . .

# Create necessary directories
RUN mkdir -p uploads static templates model/saved_models

# Expose port 7860 (Hugging Face Spaces standard port)
EXPOSE 7860

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

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