Has there been any progress on this? I've been working on my own builder script (https://gitlab.com/fkrull/debian-ostree-compose; I wasn't actually aware of the one mentioned above, but mine has turned out quite similar overall).
The booting part of ostree-boot has worked quite well, but I've been having some difficulties getting the deployment part to work: i.e. create an OSTree deployment from a regular Debian system and boot that. Once that's worked out, I should be able to provide some step-by-step instructions. I have one question about the description: The ostree-boot.control file states that "the root filesystem must be one that dracut can mount without a root= command-line argument". Unless I'm misunderstanding it, this doesn't seem to be correct (any more)? In my tests, I've happily booted VMs from MBR disks with LVM2 root partitions. -Felix
