dotcloud/docker — pull request #6398 by ashish1099 (2014-06-13 04:49:24+00:00)
Title: Update dockerizing.md

There is something wrong, Just ran this command and found this error, Seems to be that "!" should be outside inverted colon.
docker run ubuntu:14.04 /bin/echo "Hello World!"
-bash: !": event not found