Docker: Error response from daemon: connection error: desc = "transport: dial unix /var/run/docker/containerd/docker-containerd.sock: connect: connection refused": unknown

[a8568730]

It seems to have bug in containerd, see below:

What causes?: transport: dial unix /var/run/docker/containerd/docker-containerd.sock: connect: connection refused":

Reported workaround is to killall -9 dockerd or reboot the system, but it’s better update docker version to 17.12.1 or 18.03 .