fix first pass

Dockerfile

@@ -0,0 +1,23 @@
+FROM python:3.12-slim
+
+WORKDIR /opt/tisbackup
+
+COPY entrypoint.sh /entrypoint.sh
+COPY . /opt/tisbackup
+
+RUN apt update \ 
+   && apt install --no-install-recommends -y rsync ssh cron \
+   && rm -rf /var/lib/apt/lists/*
+
+RUN /usr/local/bin/python3.12 -m pip install --no-cache-dir -r requirements.txt
+
+RUN mkdir -p /var/spool/cron/crontabs \
+   && echo '59 03 * * * root /bin/bash /opt/tisbackup/backup.sh' > /etc/crontab \
+   && echo '' >> /etc/crontab \
+   && crontab /etc/crontab
+
+EXPOSE 8080
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["/usr/local/bin/python3.12","/opt/tisbackup/tisbackup_gui.py"]
+