FROM python:3.13-slim

ENV PYTHONUNBUFFERED=1 DATA_DIR=/data PORT=8080
RUN useradd --system --uid 10001 --home /app app && mkdir /data && chown app /data
WORKDIR /app
COPY server.py index.html ./
USER app
VOLUME /data
EXPOSE 8080
HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
  CMD python -c "import urllib.request,os;urllib.request.urlopen('http://127.0.0.1:%s/login'%os.environ['PORT'])" || exit 1
CMD ["python", "server.py", "serve"]