FROM python:3.12.11-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    DATABASE_PATH=/data/pump-monitor.sqlite3

WORKDIR /srv/app

COPY requirements.txt .
RUN pip install --no-cache-dir --requirement requirements.txt \
    && addgroup --system --gid 10001 monitor \
    && adduser --system --uid 10001 --ingroup monitor monitor \
    && mkdir -p /data \
    && chown monitor:monitor /data

COPY --chown=monitor:monitor app ./app

USER monitor
EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/health', timeout=3)" || exit 1

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1", "--proxy-headers", "--forwarded-allow-ips", "*"]