[Bug 1087697] man page inaccuracy about --sig-proxy and --tty

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1087697

--- Comment #5 from William Henry  ---
Lukas,according to the folks upstream, this is a bug in docker run and attach.
It should be as the text suggests.

Can you file a bug upstream with docker? Here:
https://github.com/dotcloud/docker/issues

Please just take the information you posted above and post it there.

Thanks. Well spotted.

Best,
William