I'm kind of new to self hosting, and currently repurposing my old PC as a home server. I already set it up to run nginx in docker, so I can use SSL on every website. The next thing for me would be to set up some kind of persisent workspace, that I can access from everywhere (specifically my ipad). I already had a look at kasm, but it looks to overkill.
What i want:
Persisent workspace, independent from Ubuntu server
Some kind of Linux distro with a known package manager
Perhaps CryptPad fits your needs. It's an open-source privacy-aware collaborative office suite and storage solution. It's end-to-end encrypted, so even if it gets hacked no usable information is leaked.