Docker Introduction I guarantee you that any company you work for nowadays will be utilizing some kind of container for testing and deploying applications. The most popular of the container softwares is Docker. The main benefit of Docker is that if someone wants to run your application on their computer, they do not have to try to match your software versions just to run it. All they need to do is have Docker installed on their machine and they will be able to run your program in an isolated container that you have given the instructions on which version of software to run and how to launch the program.