I am using kubernetes with docker. #kubectl, #Kubevirt

When I create a VMI using containerDisk from docker.io registry I have found there is two container creating inside single pod (one is compute and another is volumecontainervolume)

cat centos.yaml | grep -ia3 centos-kubevirt-image

 volumes:

  - name: containervolume

  containerDisk:

    image: munnaeeebd/centos-kubevirt-image:latest

 - name: cloudinitvolume

  cloudInitNoCloud:

    userData: |-

kubectl get pod | grep centos

virt-launcher-centos-5kfvw 2/2 Running 0 21h

But single container is create while using PVC and disk.img is uploaded via CDI

cat cirros-with-cirros-pvc.yaml | grep -ia3 cirros-pvc

  volumes:

   - name: containervolume

     persistentVolumeClaim:

     claimName: cirros-pvc

   - name: cloudinitvolume

     cloudInitNoCloud:

    userData: |-

kubectl get pod | grep cirros

virt-launcher-cirros-57x2r 1/1 Running 0 78m

my question is, is it normal that containerDisk create one additional container than PVC