Finally I was able to find what is the issue. Despite of I have "insecure-repositories" in my /etc/docker/daemon.json my docker service did not pick it up. docker info command indicate this becasue only 127.0.0.0/8 was under the Insecure Registries:

Why? Becasue it was installed by snap! This installation have other daemon.json in /snap/docker/2963/config/daemon.json and of course this have no insecure settings.

Editing the proper daemon.json fixed the issue.