[root@k8s-m3 ca]# cpio -iv --to-stdout./etc/rhsm/ca/redhat-uep.pem | tee /etc/rhsm/ca/redhat-uep.pem
cpio: unrecognized option ‘--to-stdout./etc/rhsm/ca/redhat-uep.pem‘
Try `cpio --help‘ or `cpio --usage‘ for more information.
[root@k8s-m3 ca]# docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest
Trying to pull repository registry.access.redhat.com/rhel7/pod-infrastructure ...
latest: Pulling from registry.access.redhat.com/rhel7/pod-infrastructure
26e5ed6899db: Pull complete
66dbe984a319: Pull complete
9138e7863e08: Pull complete
Digest: sha256:92d43c37297da3ab187fc2b9e9ebfb243c1110d446c783ae1b989088495db931
Status: Downloaded newer image for registry.access.redhat.com/rhel7/pod-infrastructure:latest
原文：https://www.cnblogs.com/wuxiaowang01/p/9397632.html