When working inside a Continuous Integration (CI) and Continuous Delivery (CD) environment, portability of code is often a core concern that needs to be addressed. Developers write code locally and need some level of assurance that it will run consistently regardless of where it is deployed. This is an area where Docker shines. The goal of this post is to run a script, written with Node.js, inside a docker container. It assumes that you have an existing script which requires access to files on the local file system as well as an account on Docker Hub.