Unusually, I discarded the podman-run version and went with
the one common to attach and start. (The defaults are left
out of the common file, because 'start' is different by
necessity). Please review extra-carefully to make sure
the new wording applies to podman-run, in particular
the "non-TTY mode" words.
Signed-off-by: Ed Santiago <santiago@redhat.com>