Build ARM image with Docker
The ARM variants can be built on x86_64 hardware using multiarch/qemu-user-static
docker run --rm --privileged multiarch/qemu-user-static:register --reset
Keep docker container running
command: tail -f /dev/null
Using Ctrl-P in docker
echo '{
"detachKeys": "ctrl-z,z"
}' > ~/.docker/config.json