# Use the official lightweight Python image
FROM python:3.10-slim

# Set the working directory in the container
WORKDIR /app

# Copy requirements first
COPY requirements.txt .

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

# Copy the rest of the application code
COPY . .

# Create a non-root user (Security Best Practice for HF Spaces)
RUN useradd -m -u 1000 user
USER user

# HF Spaces Port
ENV PORT=7860
EXPOSE 7860

# FIXED CMD: Use 'gthread' worker to handle async I/O within Flask
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--threads", "4", "--worker-class", "gthread", "--timeout", "120", "app:app"]