It's not pleasant? I don't know what Docker Desktop is (or what the point is) but Docker Server is two lines of shell on most distros (add repo and install).

I use CentOS, Ubuntu and Arch and have to regularly use third-party repos, PPAs or the AUR - this isn't a particularly uncommon thing to do when installing software. And it beats running a shell script, which is how k8s stuff works most of the time :P