dotcloud/docker — pull request #4947 by tianon (2014-04-01 02:24:21+00:00)
Title: Allow "SIG" prefix on signal names in `docker kill` ("SIGKILL", etc)

This way, we can use both `docker kill -s INT some_container` and `docker kill -s SIGINT some_container` and both will do nice things for us. :)