If you are reading this, there is no doubt you have heard of Docker. Living up to the hype, Docker has become the relative standard for DevOps operations. Its ability to simplify deployments and testing by creating efficient and immutable images of the applications working in their own silo has greatly helped with its popularity. The majority of Docker’s attention can be attributed to its improved efficiency regarding placement of applications—making tech central for cloud applications.
By unifying application development Docker makes the target environment part of your app in the form of a container rather than forcing you to prepare its environment on each machine. This means you no longer have to deal with conflicting library versions or overlapping network posts. Built images are immutable, allowing your application to work the same way locally, on a team member’s computer, or the cloud. In addition to this, it is possible to run many instances of the container on the same machine, which helps to increase the density of deployments, and in turn, brings down costs.