In previous chapter, we learned how to install Docker on Windows, Mac OS, Linux, and Amazon EC2 cloud. So far, you should have Docker running on your machine and should be able to run the hello-world image in a container. In this chapter, we will dive deeper into the world of images and containers. Later, we will also cover image distribution-related terms, such as Docker repository, registry, and index. We are going to cover the following topics in this chapter:

Note that we will mainly use the shell (or command prompt in Windows) to execute Docker commands. You can always execute docker help to get a description of the available commands. Executing docker help with the name of specific command docker help pull, for example, will display information about this  command with a brief description of the available options:

Let's start by explaining in detail...