Containerizing the RESTful web service using Docker

We have advanced a lot from the time when an app would be installed across servers, to each server being virtualized and the app then being installed on these smaller virtual machines. Scalability issues for the applications were resolved by adding more virtual machines, with the app running to the load balancer.

In virtualization, a large server is divided into multiple virtual machines by allocating the computing power, memory, and storage among the multiple virtual machines. This way, each of the virtual machines is in itself capable of all those things that a server was, albeit on a smaller scale. With this virtualization has helped us a lot in judiciously making use of the server's computing, memory, and storage resources. 

However, virtualization needs some setup, that is, you need to create the virtual machine, install the required dependencies, and then run the app. Moreover, you may not be 100% sure if the app would run successfully...