Docker overview

Docker is an open source container-based virtualization technology that helps to automate the deployment of an application inside a container. Docker uses resource isolation features of the Linux kernel such as cgroups and kernel namespaces and it allows the running of multiple containers independently and isolated from each other on a host machine. The benefit of Docker over virtual machine is that Docker is a light-weight process compared to a virtual machine and it provides resource isolation when sharing the same kernel including drivers of the host machine. Docker is open source technology and supported on different platforms. As Docker is built on top of Linux kernel, it supports Windows and Mac using Boot2Docker application.

Some of the main features of Docker are:

• Docker Engine: The light-weight container to create, manage and containerize the application.

• Portability: One of the important features is container-reuse. You can prepare one Tomcat image and use this image...