Artifactory Docker repo breaks with containerd 1.3.0-rc2

Salve,

today I was preparing for a systems upgrade of our Kubernetes "dev" cluster, and
as a part of which several component upgrades were performed, among which I
upgraded "containerd", a core component of Docker, to version 1.3.0-rc2.

It turns out that we cannot pull Docker images from Artifactory with containerd
>= 1.3.0 :

   # ctr images pull k8s.artifactory.gfsrv.net/metrics-server:v0.3.4

   ctr: failed to resolve reference "k8s.artifactory.gfsrv.net/metrics-
   server:v0.3.4": no scope specified for token auth challenge

I found an open issue on the issue tracker, and they say that they follow the
specification and the repositories need fixing:

https://github.com/containerd/containerd/issues/3556

Please forward this information to you develpers, this problem will become
relevant very soon, when containerd 1.3.0 is released.