On Thu, Sep 28, 2017 at 06:02:04PM +0200, Emmanuel Kasper wrote: In the general case that you want to build bootable disk images, installing them using d-i, you can do that fully non-root using virt-install: https://github.com/libguestfs/libguestfs/blob/stable-1.34/builder/website... You could also use virt-builder (either using our Debian 9 template as a starting point, or your own created in the previous step). Something like: $ virt-builder debian-9 \ --install some,required,packages \ --copy-in test-dir:/var/tmp \ --firstboot-command /var/tmp/test-dir/run-the-tests.sh $ qemu-system-x86_64 \ -nodefaults \ -nographic \ -machine accel=kvm:tcg \ -cpu host \ -m 2048 \ -drive file=debian-9.img,format=raw,if=virtio \ -serial stdio Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html