How do I add a new application container to an existing rkt pod?

[Derek Mahar]

How do I add a new application container to an existing rkt pod? The documentation for 'rkt run' shows how to launch multiple applications in a pod using a single command. How might I achieve the same effect using multiple commands?

By the way, I also asked this question on ServerFault at http://serverfault.com/questions/789868/how-do-i-add-a-new-application-container-to-an-existing-rkt-pod.

Derek