virt-install

Create virtual machines with libvirt and begin OS installation. More information: https://virt-manager.org/.

Create a virtual machine with 1 GiB RAM and 12 GiB storage and start Debian installation:

virt-install --memory {{1024}} --disk path={{path/to/image.qcow2}},size={{12}} --cdrom {{path/to/debian.iso}}