Import VM disk image and modify it in the cluster in KubeVirt

gistfile1.txt

kubectl apply -f import-original-image.yaml
# Wait until the DV import has finished. Now you have imported the original image on your k8s cluster
# Modify the initial image with virt-customizee by using virtctl guestfs command. You can install additional packages or modify certain files
$ virtctl guestfs pvc-with-cloud-init
Use image: registry:5000/kubevirt/libguestfs-tools@sha256:4cfe1c07cc33999ed05bd43873b7a30b1b9127a4ae4922333e68a1bcd35169ce 
The PVC has been mounted at /disk 
If you don't see a command prompt, try pressing enter.
$ ls /disk/
disk.img
virt-customize --run-command 'echo "My awesome image" > /tmp/hello' --install cloud-init  -a /disk/disk.img
exit
# Now create VMs using the pvc-with-cloud-init as source
$ kubectl apply -f vm-with-updated-dv.yaml 
$ kubectl get vm
NAME   AGE     STATUS    READY
vm     2m25s   Running   True
$ virtctl console vm
Successfully connected to vm console. The escape sequence is ^]

vm login: fedora
Password: 
[fedora@vm ~]$ cat /tmp/hello 
My awesome image
[fedora@vm ~]$ rpm -qa | grep cloud-init
cloud-init-19.4-2.fc32.noarch

import-original-image.yaml

apiVersion: cdi.kubevirt.io/v1beta1
kind: DataVolume
metadata:
  name: pvc-with-cloud-init 
  annotations:
    cdi.kubevirt.io/storage.bind.immediate.requested: "true"
spec:
  source:
      registry:
         url: docker://registry:5000/kubevirt/fedora-with-test-tooling-container-disk:devel
  pvc:
    accessModes:
      - ReadWriteOnce
    resources:
      requests:
        storage: 10G

vm-with-updated-dv.yaml

---
apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  labels:
    kubevirt.io/vm: vm
  name: vm
spec:
  dataVolumeTemplates:
  - metadata:
      name: dv
    spec:
      pvc:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 10G
        storageClassName: local
      source:
        pvc:
          name: pvc-with-cloud-init
          namespace: default
  running: true
  template:
    metadata:
      labels:
        kubevirt.io/vm: vm
    spec:
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: datavolumedisk1
        resources:
          requests:
            memory: 2Gi
      terminationGracePeriodSeconds: 0
      volumes:
      - dataVolume:
          name: dv
        name: datavolumedisk1