Update ReadME.MD

ReadME.MD

@@ -14,3 +14,50 @@ charm pull cs:~containers/kubeapi-load-balancer-786
 charm pull cs:~containers/keepalived-85
 charm pull cs:~containers/coredns-20
 ```
+
+## These are the container images used by this release:
+
+```Text
+cdkbot/microbot-amd64:latest
+cdkbot/microbot-arm64:latest
+cdkbot/microbot-s390x:latest
+cdkbot/registry-amd64:2.6
+cdkbot/registry-arm64:2.6
+cephcsi/cephcsi:v2.1.2
+coredns/coredns:1.8.3
+coreos/kube-state-metrics:v1.9.8
+defaultbackend-amd64:1.5
+defaultbackend-arm64:1.5
+defaultbackend-ppc64le:1.5
+defaultbackend-s390x:1.4
+external_storage/nfs-client-provisioner:v3.1.0-k8s1.11
+k8s-artifacts-prod/ingress-nginx/controller:v0.44.0
+k8s-dns-dnsmasq-nanny:1.15.10
+k8s-dns-kube-dns:1.15.10
+k8s-dns-sidecar:1.15.10
+k8scloudprovider/cinder-csi-plugin:v1.20.0
+k8scloudprovider/k8s-keystone-auth:v1.20.0
+k8scloudprovider/openstack-cloud-controller-manager:v1.20.0
+k8scsi/csi-attacher:v2.1.1
+k8scsi/csi-node-driver-registrar:v1.3.0
+k8scsi/csi-provisioner:v1.4.0
+k8scsi/csi-resizer:v0.5.0
+k8scsi/csi-snapshotter:v1.2.2
+kubernetes-ingress-controller/nginx-ingress-controller-ppc64le:0.20.0
+kubernetesui/dashboard:v2.2.0
+kubernetesui/metrics-scraper:v1.0.6
+metrics-server-amd64:v0.3.6
+metrics-server-arm64:v0.3.6
+metrics-server-ppc64le:v0.3.6
+metrics-server-s390x:v0.3.6
+nvidia/k8s-device-plugin:v0.9.0
+pause:3.4.1
+rancher/rancher:latest
+sig-storage/csi-attacher:v2.2.1
+sig-storage/csi-node-driver-registrar:v1.3.0
+sig-storage/csi-provisioner:v1.6.1
+sig-storage/csi-resizer:v0.5.1
+sig-storage/csi-snapshotter:v2.1.3
+sig-storage/livenessprobe:v2.1.0
+sonatype/nexus3:latest
+```