# 1. Start with a lean and official Python base image
FROM python:3.10-slim

# 2. Create a non-root user and group
RUN useradd -m -u 1000 user

# 3. Set environment variables for a writable cache directory
ENV HF_HOME="/app/cache"
ENV TRANSFORMERS_CACHE="/app/cache"

# 4. Set the working directory
WORKDIR /app

# 5. Copy requirements first to leverage Docker caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# 6. Copy the application code
COPY ./app /app/app

# 7. Grant ownership of the entire /app directory to the 'user'
RUN chown -R user:user /app

# 8. Switch to the non-root user
USER user

# 9. Define the command to run your application for Hugging Face Spaces
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "1", "--worker-class", "uvicorn.workers.UvicornWorker", "--timeout", "0", "app.main:app"]