I assumes you've visited the Lightwhale website and at least read the headlines:
"No maintenance headaches. Just boot and focus on what matters!"
and the first section, including:
"Lightwhale lowers the entry barrier, removes tedious administration tasks, and opens a friction-free path to productivity"
But maybe you dismissed as being empty buzzwords, or didn't quite believe it, so you want an explanation. That's perfectly okay, allow me to elaborate:
So, if you've already gone though the process of partitioning, installing, and configuring a general purpose operating system, and then ran that "one line" that added the docker repository, installed docker, docker-compose, and buildx, and presumably also added yourself to the docker user group, then I'd say you've got a head start compared to a clean, bare-metal box. True, you're now off to the races.
Of course, all this work and time invested in your system comes with a tax called maintenance.
Everything you just installed is live. And now your job is to keep everything safe and sound. Not just the files in $HOME and /etc/, but also /usr/bin/docker, /usr/bin/bash, /lib/libc.so, and even /usr/bin/[. But that's just the rootfs. You also have to groom your boot partition. Even the partition table and MBR. I know, your installer and package manager handles that for you. But nevertheless, all this is writable and either imposes an attack surface, is at risk of daily butter fingers breaking things, or lives on a filesystem that may introduce silent bitrot or on a media that can fail. But that's not the end of it. If do a good job, your server will live a long and happy life. And eventually, you get to experience something remarkable: It dies. I'm not talking about the hardware suffering a fatal crash, no; I'm taking about Canonical deciding that your version of Ubuntu is now suddenly going into End Of Life. You now have choices to make: Should you upgrade and leave your system at the mercy of the numerous upgrade scripts? Should you reinstall to get a clean slate, repeat everything mentioned above, and try to migrate your data configuration, containers, volumes, etc? Or maybe just leave the OS there dead; afterall, you're only interested in your docker containers and they're unaffected, so that seems like a valid path. Except every time you log in, it's like stepping over a dead body in the doorway, and that doesn't feel quite right.
Of course, if you find these administration tasks fun and interesting that's perfectly okay. And honestly, I can absolutely relate to that, because I've been doing it as a hobby since forever, and I enjoyed myself. Until I reached a point where the installer and maintenance didn't interest me as much as just running the software.
Now, look back at my taglines above, and I hope you can see how Lightwhale can benefit you in setting up a home server:
If you want less tedious administration and maintenance, but instead like a friction-free path to just boot and run your software, then Lightwhale is worth a try.