A hypervisor is a guest operating system like VMWare or VirtualBox, but instead, containers run directly within the host’s machine kernel. Also, containers are lightweight because they do not require an extra load of a hypervisor. Since containers are isolated, they provide security, thus allowing multiple containers to run simultaneously on the given host.

In other words, applications run in the same way, irrespective of where they are and what machine they are running on because the container provides the environment throughout the software development lifecycle of the application. Container refers to a lightweight, stand-alone, executable package of a piece of software that contains all the libraries, configuration files, dependencies, and other necessary parts to operate the application.

What is Docker? - 'build once and run anywhere.'ĭocker is a software development tool and a virtualization technology that makes it easy to develop, deploy, and manage applications by using containers.

Docker centos 8