FROM python:3.10-slim

# Install git for huggingface_hub to download models
RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user (UID 1000) as required by Hugging Face Spaces
RUN useradd -m -u 1000 user
USER user

ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    # Hugging Face cache inside the container
    HF_HOME=/home/user/.cache/huggingface

WORKDIR $HOME/app

# Install Python dependencies
COPY --chown=user requirements.txt .
# Use --extra-index-url for pre-compiled llama-cpp-python wheels
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt \
    --extra-index-url https://abetlen.github.io/llama-cpp-python/whl/cpu

# Copy application source
COPY --chown=user app.py .

# Expose the port Hugging Face Spaces expects
EXPOSE 7860

# Start the FastAPI server
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]