How to know if docker is already logged in to a docker registry server

Question

I\'m not sure if I have already logged in to a docker registry in cmd line by using cmd: docker login. How can you test or see whether you are logged in or not, without tryi

Answer 1

Just checked, today it looks like this:

$ docker login
Authenticating with existing credentials...
Login Succeeded

NOTE: this is on a macOS with the latest version of Docker CE, docker-credential-helper - both installed with homebrew.