The main purpose of Docker is to Deploy applications to production environment, or other environments as required by Ops. However, the highlight of Docker lies in the process of deploying it. Till Docker came into picture, the traditional approach to deployment was via Virtual Machines (VM). And let’s not get started with the drawbacks of VMs because there are a plenty. Starting from the effort required to boot a VM, to launching multiple VMs in the same machine, it is a tough task to get things running with VMs. So first, let’s see what does Docker provide? Docker provides a container environment which can be used to host any application of your choice. The software application and the dependencies which support it, are tightly-packaged together. This packaged product is called a Container. Since it is done by Docker, it is called Docker container! What Is Docker? So then what is Docker good at? Docker is great at building and sharing disk images with others through