FROM python:3.10-slim

# Install libgomp1 for CPU multithreading and other dependencies
RUN apt-get update && apt-get install -y \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Set up user for Hugging Face Spaces (UID 1000)
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR $HOME/app

# Copy and install basic requirements
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Install llama-cpp-python from prebuilt CPU wheels for fast, error-free setup
RUN pip install --no-cache-dir llama-cpp-python \
    --extra-index-url https://abetlen.github.io/llama-cpp-python/whl/cpu

# Copy app code
COPY --chown=user . .

# Hugging Face Spaces uses port 7860 by default
EXPOSE 7860

CMD ["python", "app.py"]