Installing Docker
Docker provides the software so that you can run containers. A container is an executable that contains everything you need to run the software it contains. For example, if I have a Linux system configured to run Hadoop, Hive, and Ambari, and I create a container from it, I can give you the container, and when you run it, it will contain everything you need for that system to work, no matter the configuration or software installed on your computer. The same applies if I give that container image to any other person. It will always run the same. A container is not a virtual machine. A virtual machine is an abstraction at the hardware level and a container is an abstraction at the application layer. A container has everything ...
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