While you are technically correct, kubernetes removed the Dockershim. Docker is often used as a synonym for containers. However, most of the things should still work [1].
I am very much aware of this, but that's exactly what I am arguing. Articles setting out to explain Kubernetes should not perpetuate the false equality of docker and containers.
If you use `docker build/run` in your bash, it will actually be more confusing IMO saying k8s "dropped docker(shim) support". This fact should be a footnote for the curious reader, surely on an introduction article.