FROM python:3.12-slim

WORKDIR /app

# Install sentence-transformers and deps
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application
COPY app.py .

# Health check
HEALTHCHECK --interval=30s --timeout=5s --start-period=60s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')" || exit 1

EXPOSE 8000

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]