FROM python:3.11-slim

WORKDIR /app

COPY app.py .

RUN pip install --no-cache-dir streamlit matplotlib numpy

EXPOSE 8501

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD python3 -c "import urllib.request; urllib.request.urlopen('http://localhost:8501')" || exit 1

CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]