# Dockerfile for Hugging Face Spaces - TinyLlama + ctransformers
FROM python:3.10-slim

# Install system packages for ctransformers build
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      build-essential cmake git libclang-dev libssl-dev pkg-config && \
    rm -rf /var/lib/apt/lists/*

# Create a non-root user (Spaces uses UID 1000)
RUN useradd -m -u 1000 user

# Create app directory & make sure non-root user can write
WORKDIR /app
RUN mkdir -p /home/user/model_cache && chown -R user:user /home/user

# Copy requirements and install
COPY --chown=user:user requirements.txt /app/requirements.txt
RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt

# Copy app files
COPY --chown=user:user . /app

# Switch to non-root user
USER user

# Expose Gradio port
EXPOSE 7860

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