I just returned from the OpenStack Summit in Atlanta. Any of the speakers that talked about “Docker” or “Linux Containers” had a full audience. From this event alone, it was clear that people are very interested in Docker and are still trying to figure out what it is and what it can do.
Yesterday, Linux Journal published Docker: Lightweight Linux Containers for Consistent Development and Deployment. This is a fantastic article on Docker that covers its background, goes under the hood, compares Docker to other types of virtualization, shows you how to create a Docker Image, and more.
If you are still trying to understand what Docker is and how it works, this is the article to read.