Can't start dockers after update

[s.raynal2]

Ah, it’s seem I’m not the only one :

Docker issues after upgrade to Bullseye

Isn’t there normally a Docker pre-requisite check that warns you about missing kernel CONFIG_ options? Did this flag anything up? From the aforementioned docs… Am I using cgroup v2? Yes if /sys/fs/cgroup/cgroup.controllers is present. And it’s present, so that may be as far as Docker checks. Indeed, docker info shows: Server: ... Cgroup Driver: systemd …

Sorry I should have checked first.