Other HNers are making it more complicated than it strictly needs to be. Kubernetes and storage drivers are great and all, but we're talking hello world here.

Other HNers are making it more complicated than it strictly needs to be. Kubernetes and storage drivers are great and all, but we're talking hello world here. So, if you want to keep it simple: docker run postgres --detach --volume /save/my/data/in/this/path:var/lib/postgresql/data That's it. (The --detach is to start it in background. Otherwise it would run in your terminal session and stop when you CTRL-C.) Even if you don't specify a path for the data, the container would save its data in a Docker volume (a file), which doesn't get deleted until you explicitly ask it to. If you stop the container and restart it, it'll reattach to the same volume and find the data. If you delete the container without explicitly deleting its volumes as well, you'll be able to create another postgres container and attach the old volume to it.