FROM python:3.9-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
RUN pip install --no-cache-dir \
    fastapi>=0.95.0 \
    uvicorn>=0.21.0 \
    pydantic>=1.10.7 \
    onnxruntime>=1.14.0 \
    sentence-transformers>=2.2.0 \
    numpy>=1.20.0 \
    pyyaml>=6.0

# Copy application code
COPY app.py .
COPY models/ models/

# Expose port
EXPOSE 7860

# Set environment variables
ENV PYTHONPATH=/app
ENV MODELS_DIR=/app/models

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