While logging in with:
$ docker login registry.mydomain.com
I received this error:
Remote error from secret service: org.freedesktop.DBus.Error.UnknownMethod: No such interface 'org.freedesktop.Secret.Collection' on object at path /org/freedesktop/secrets/collection/login
Error saving credentials: error storing credentials - err: exit status 1, out: `No such interface 'org.freedesktop.Secret.Collection' on object at path /org/freedesktop/secrets/collection/login`