Debian one-context: fail to boot

On my test, the debian 10 and 11 one-context fail to boot with a timeout.

The qemu command line is

/usr/bin/qemu-system-x86_64 -device virtio-net,netdev=user.0 -boot once=d -netdev user,id=user.0,hostfwd=tcp::2222-:22 -machine type=pc,accel=kvm -m 2048M -vnc 127.0.0.1:13 -smp cpus=2,sockets=2 -drive file=output/debian/10.10.0/provisionned/one-context/debian-10.10.0-one-context.img,if=virtio,cache=writeback,discard=unmap,format=qcow2,detect-zeroes=unmap -drive file=/home/gitlab-runner/builds/UpbGXxc7/0/daniel.dehennin/builder/output/debian/10.10.0/base/debian-10.10.0.img,media=cdrom -name debian-10.10.0-one-context.img

Looks strange to try to boot on the first CDROM (-boot once=d) for a non base image.