docker pull fails
running on CentOS 7:
$ docker pull registry.nic.cz/knot/shotgun:v20210714
Trying to pull repository registry.nic.cz/knot/shotgun ...
Pulling repository registry.nic.cz/knot/shotgun
Error: image knot/shotgun:v20210714 not found
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running on CentOS 7:
$ docker pull registry.nic.cz/knot/shotgun:v20210714
Trying to pull repository registry.nic.cz/knot/shotgun ...
Pulling repository registry.nic.cz/knot/shotgun
Error: image knot/shotgun:v20210714 not found