Though Red Hat, Ubuntu and Linux are rivals, yet all of them agree in one point - Docker, a container technology. Docker is potential as well as disruptive in different aspects. Now the question is- can containers with Docker be the next great revolution in virtualization and the cloud? To know the answer of this question, go through the article written by Steven J. Vaughan-Nichols, writer of technology.
http://www.zdnet.com/red-hat-ubuntu-and-docker-container-virtualization-goes-mainstream-7000028610/