Thanks… yesterday evening I had my build setup finished (probably I‘ll contribute some dev and arm based images for UTM virtualizer). However, my build from scratch took around 2m25s. Wow, that invokes docker and build some go, c files, creates a whole Linux Debian based distribution from scratch by debootstrapping and writes out the final artifact. 2m25s! My old book took over 20 minutes… lol
Okay, later I‘ll take a look how it performs on platform crossbuild for x86 via QEMU emulation instead of only virtualization…