> I cannot find containerd metrics for image pulling. I prefer to add an image pulling in container runtime. (I opened [containerd/containerd#7241](https://github.com/containerd/containerd/issues/7241) to track it in containerd)    According to CRI, the container runtime implementation may change conditionally such as cri-o/cri-containerd/docker/rkt/frakti, kubelet image manager maybe the best place to do this work.