When using oc adm release mirror to mirror OpenShift releases, there is one container missing during the uploads, the container named openshift/release/4.x.y_x86_64-4.18.2-x86_64-kube-virt-container where 4.x.y is the release being synchronized with the local registry  

    I tested several 4.18.z versions and they all have the same outcome

    Always

    1. create a synchronization command similar to this one :
date ; for i in 4.18.2 ; do oc.4.18.2 adm release mirror -a ${HOME}/pull-secret.txt --from=quay.io/openshift-release-dev/ocp-release:${i}-x86_64 --to-release-image=ocpv418release.registry.local/openshift-release-dev/ocp-release:${i}-x86_64 --to=<local registry URL>/openshift-release-dev --print-mirror-instructions=idms |& tee ${HOME}/$(date +"%Y%m%d")-release-sync.${i}.txt ; sync ;done; date

    2. Look for kube-virt-container in output file :
grep kube-virt-container ${HOME}/openshift/$(date +"%Y%m%d")-release-sync.${i}.txt
=> nothing is selected

no container 4.x.y-x86_64-kube-virt-container has been synchronized

 4.x.y-x86_64-kube-virt-container should also be synchronized for complete synchronization process with local registry