Docker is an Open-source software, which is responsible for the automatic deployment of applications found in Linux containers.
Docker is a tool that creates, deploys and executes applications with the help of containers. Containers facilitate application packaging, together with the parts like libraries.
It permits the applications to run on the same Linux kernel. It offers security to those applications, which are being executed in a shared environment. It competes with the infrastructure abstraction tools such as ‘chef’ and application containers like ‘VMware Vapp’.
It functions with the basic components like image, container, registry, platform image and dockerfile. It lets the users to allocate particular amounts of memory, CPU and disk resources to every process, as same as a virtual machine.