That image is a normal X86 virtual image with, I assume, the same package base. I don't see much point in dealing with that ... but If you need that, install a base X86 Debian / Ubuntu system and https://github.com/igorpecovnik/lib/blob/second/deboostrap.sh#L138-L143 ... and you are close to Armbian. Special things are anyway very much hardware related, which aren't emulated.   BTW: Next build script release brings some important upgrades in user configuration: - user patches for sources - u