Creating Docker images

Docker, Docker, Docker! I hear this phrase more and more in all the conferences and tech meetups that I attend. The arrival of Docker has been welcomed by the community with open arms and it has instantly become a hit. The Docker ecosystem has been rapidly expanding with many other companies providing services, support, and complimenting frameworks such as Apache Mesos and Amazon Elastic Beanstalk, just to name a few. Even Microsoft has embraced the technology and is working on providing Docker support in their Azure Cloud service.

The reason for Docker's overwhelming popularity lies behind the ability that it provides to package and deploy applications in a form of self-contained containers. The containers are more lightweight than the traditional full-blown virtual machines. Multiple numbers of them can be run on top of a single OS instance, thus increasing the number of applications that can be deployed on the same hardware as compared to traditional VMs.

In this...