FROM python:3.12-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY app.py .

EXPOSE 5353

HEALTHCHECK --interval=30s --timeout=5s --retries=3 --start-period=10s \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:5353/health')" || exit 1

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