This is based on bootc (bootable containers), so note that the OS build is described in a normal Dockerfile: https://github.com/pocketblue/pocketblue/blob/main/Container... which is then run by the Github action (or locally).

Very similar to how Universal Blue, Bazzite, Bluefin etc. build at https://github.com/ublue-os/bazzite (see their Containerfile), but for mobile.

Has a similar mission to https://postmarketos.org, but with a different build system AFAICT