'atomic run' problems when mixing interactive containers and one-off commands

[miabbott]

This problem probably should have been addressed in #1019, but I didn't test down this path.

When the user does an atomic run of an image in interactive mode, subsequent uses of atomic run to run a one-off command will just execute that interactive container. In some cases, this is OK, but it runs into problems when you have the same image name on multiple registries or when the image has multiple tags.

# ./atomic run registry.fedoraproject.org/fedora:25
docker run -t -i --name fedora registry.fedoraproject.org/fedora:25 /usr/bin/bash
[root@932a9b4963be /]# grep PRETTY /etc/os-release
PRETTY_NAME="Fedora 25 (Twenty Five)"
[root@932a9b4963be /]# exit
exit
# ./atomic run registry.fedoraproject.org/fedora:25 date
fedora
Wed May 31 19:58:21 UTC 2017
# ./atomic run registry.fedoraproject.org/fedora:26 grep PRETTY /etc/os-release
PRETTY_NAME="Fedora 25 (Twenty Five)"
# ./atomic run registry.fedoraproject.org/fedora:26 date
Wed May 31 19:58:34 UTC 2017

[miabbott]

This is working correctly in git master (77e8acd).