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Kubernetes version: 1.24.3
Cloud being used: (put bare-metal if not on a public cloud)
Installation method:
Host OS: ubuntu 18.04.5
CNI and version: calco 3.20
CRI and version: containdrd1.6.6
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You do not need to remove docker, but if you want to continue to use it as the container runtime for kubernetes you’ll need to setup cri-dockerd 
My question is that after container run time is changed form docker to containerd, whether Dicker must be uninstalled from the node or not?
if then, any command of docker, for example “docker build”, “docker run”, “docker pull”, “docker push”, etc., can not be used at the bode.
And I faced at some errors while pulling images from local image repository which is pushed before k8s upgrade.
It does not.