Python 3.13 + add nginx reverse-proxy

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim
+FROM python:3.13-slim
 
 WORKDIR /opt/tisbackup
 
@@ -8,7 +8,7 @@ COPY . /opt/tisbackup
 RUN apt-get update \
    && apt-get install --no-install-recommends -y rsync ssh cron \
    && rm -rf /var/lib/apt/lists/* \
-   && /usr/local/bin/python3.12 -m pip install --no-cache-dir -r requirements.txt \
+   && /usr/local/bin/python3.13 -m pip install --no-cache-dir -r requirements.txt \
    && mkdir -p /var/spool/cron/crontabs \
    && echo '59 03 * * * root /bin/bash /opt/tisbackup/backup.sh' > /etc/crontab \
    && echo '' >> /etc/crontab \
@@ -17,4 +17,4 @@ RUN apt-get update \
 EXPOSE 8080
 
 ENTRYPOINT ["/entrypoint.sh"]
-CMD ["/usr/local/bin/python3.12","/opt/tisbackup/tisbackup_gui.py"]
+CMD ["/usr/local/bin/python3.13","/opt/tisbackup/tisbackup_gui.py"]