At this point probably everybody has heard about Docker and most developers are familiar with it, use it, and therefore know the basics such as how to build a Docker image. It is as easy as running docker built -t name:tag ., yet there is much more to it, especially when it comes to optimizing both the build process and the final image that is created.

The article goes on to cover caching, slimming, and securing your images so they’ll run faster and be less prone to abuse.