FROM python:3.9-slim

WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PORT=7860

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

# Copy project files
COPY . .

# Ensure templates directory exists
RUN mkdir -p templates

# Expose the port Hugging Face Spaces expects
EXPOSE 7860

# Run the application with gunicorn for better performance
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "app:app"]