LXC and LXD: a different container story

debos does not require root on the build host. It basically wraps debootstrap and then allows a bunch of other actions to be scripted, including partitioning and formatting of filesystems inside a virtual disk, then outputting bmaptool files for writing said disk image to an actual disk. All the tasks debos does which normally require root it works around with its fakemachine VM implementation.

debos can also build disk images for other architectures, it can use QEMU as needed when execution within the disk image is needed. It's a bit slow, and debos is (I think) only fully functional on x86_64 hosts for now, but it has worked great for building ARM Debian images for me.