Kloster is an Alpine Linux+Xen spin I am using to host my own services. It’s not much right now, but the intention is to have a tiny, secure Dom0 based on Alpine Linux with the Sway wayland wm that comes with scripts to set up a set of default DomU’s, not entirely unlike Qubes but with the express purpose of using the DomU’s to deploy services in a long-term way and no intention to be directly useful as a desktop OS. Do not take this setup to be secure! I’m just experimenting with the ideas, I don’t know if I’ve made a mistake! Use a mature system if you want security.
neat things I’ve noted about using mkimage so far that I didn’t realize at first. Maybe I missed it in the documentation.