Why I do not see any containers running on the kubernetes nodes?

General Discussions
1 
Kubernetes version: 
Client Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.4", GitCommit:"49499222b0eb0349359881bea01d8d5bd78bf444", GitTreeState:"clean", BuildDate:"2021-12-14T12:50:25Z", GoVersion:"go1.16.10", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.4", GitCommit:"49499222b0eb0349359881bea01d8d5bd78bf444", GitTreeState:"clean", BuildDate:"2021-12-14T12:41:40Z", GoVersion:"go1.16.10", Compiler:"gc", Platform:"linux/amd64"}

Cloud being used: cloud 
Installation method:
Host OS: SUSE Linux Enterprise Server 15 SP2
CNI and version: 0.3.1 (taken from: /etc/cni/net.d/10-calico.conflist)
CRI and version: containerd://1.5.6

Kubernetes pods are running on node(s) and consist of (docker) containers.
Question:
Why I do not see any container running there (on the nodes) ?

$ docker ps --all
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES