# Use Python 3.9
FROM python:3.9

# Set working directory
WORKDIR /app

# Copy requirements and install dependencies
COPY requirements.txt requirements.txt
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy the rest of the backend code
COPY . .

# Create a non-root user (Security requirement for HF Spaces)
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Expose port 7860 (Required by Hugging Face)
EXPOSE 7860

# Command to run the application
# We use gunicorn for production performance
CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app", "--timeout", "120"]