my understanding is that you can install a docker image from different repositories. No surprise there. What surprises me is that there isn't an easily accessible command that tells me that an image has been pulled from a certain registry i.e. some .
How do I get that information?
Do not confuse repositories with registry.
A Docker repository is where you can store 1 or more versions of a specific Docker image.
This information for an image can be found by running
docker images ls -a
On the other hand a registry will consist of multiple repositories which contain images related to a specific project.
Please see the difference here
If you need to find which registry your docker instances is pointing to, run the below command
docker info
