Hello, We will use podman containers in the future to test the update of our application server from version 'X' to version 'Y', multiple times and using always the podman container running version 'X' to test the update again, i.e. on boot (run) the container has always again the version 'X' to be updated. Part of this is a complete PostgreSQL 15.1 cluster with the database to be used by the application servers (a complete Library Management System). The challenging part was the cluster of around 6 GByte, to not have to load or build it after the launch of the container. I came up with the idea to create a tar archive of the complete cluster below /data/postgresql151/ saved this outside and pull it in while building the podman container. The Dockerfile has for this: ... # we used a ready to run PostgreSQL cluster from now # RUN cp /usr/local/sisis-pap/pgsql-15.1/etc/linux /etc/init.d/postgres RUN mkdir /data COPY cluster.tgz /data RUN tar xPzf /data/cluster.tgz # Start PostgreSQL server and SSH daemon on container start # COPY initSunRise.sh /usr/local/bin/initSunRise.sh RUN chmod 0755 /usr/local/bin/initSunRise.sh RUN echo "/etc/init.d/postgres start" >> /usr/local/bin/start.sh RUN echo "/usr/local/bin/initSunRise.sh" >> /usr/local/bin/start.sh RUN echo "/usr/sbin/sshd -D" >> /usr/local/bin/start.sh RUN chmod 0755 /usr/local/bin/start.sh ... EXPOSE 22 8076 3045 ENTRYPOINT /usr/local/bin/start.sh STOPSIGNAL SIGQUIT If we have to change something in the cluster, for example content of tables, we have to export a fresh copy to the file cluster.tgz again and build the container again. This works fine and a start of the container with podman run -d -p 2022:22 -p .... sles15-sp6-v73 make the system available for SSH in a few seconds with the PostgreSQL server and all app servers launched and ready to use for the update to 'Y'. Comments or hints for improvement? matthias -- Matthias Apitz, ✉ guru(a)unixarea.de, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub Annalena Baerbock: "We are fighting a war against Russia ..." (25.1.2023) I, Matthias, I am not at war with Russia. Я не воюю с Россией. Ich bin nicht im Krieg mit Russland.