„Any sufficiently advanced technology is indistinguishable from magic.“
– Arthur C. Clarke
Containers have been around much longer than Docker and Kubernetes. But certainly these applications made them more wellknown and also much more accessible. How to build an image for a container and also how it works at runtime has been discussed many times; but what about the state in between? In order to best use and optimize container images in our daily work, we need to understand how they are built. Thus, the following article – garnished with a specially handcrafted image – sheds light on the concept of OCI images.