Docker - check private registry image version

Question

What CLI commands do I need to use in order to check if the image in my private docker registry is a newer version than the one currently running on my server?

E.g.

Answer 1

Not sure about the version but if you mean the tag of image, it can be easily checked through the registry v2 api . Note that in context of docker images tag has nothing to do with the version of software.

Use curl command in CLI

 curl :/v2//tags/list

To get a list of repositories pushed on the private registry, use

curl :/v2/_catalog