FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Install llama-cpp-python with server support
RUN pip install --no-cache-dir llama-cpp-python[server]

# Copy model and scripts
COPY . .

# Create non-root user
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Start server
CMD ["python", "-m", "llama_cpp.server", \
     "--model", "Qwen3-4B-Function-Calling-Pro.gguf", \
     "--host", "0.0.0.0", \
     "--port", "8000", \
     "--n_ctx", "2048", \
     "--n_threads", "8", \
     "--temperature", "0.7"]