Authors: Jorge Castro, Duffie Cooley, Kat Cosgrove, Justin Garrison, Noah Kantrowitz, Bob Killen, Rey Lejano, Dan “POP” Papandrea, Jeffrey Sica, Davanum “Dims” Srinivas
Kubernetes is deprecating Docker as a container runtime after v1.20.
You do not need to panic. It’s not as dramatic as it sounds.
tl;dr Docker as an underlying runtime is being deprecated in favor of runtimes that use the Container Runtime Interface(CRI) created for Kubernetes. Docker-produced images will continue to work in your cluster with all runtimes, as they always have.

See KEP in progress - kubernetes/enhancements#1985
dockershim has been part of kubelet for far too long. we vendor in a whole bunch of stuff from moby/moby to make things work. The correct split/ar...