I'm following https://docs.vmware.com/en/VMware-Tanzu-Kubernetes-Grid/2.1/tkg-deploy-mc-21.pdf
I've successfully copied tar files and installed docker on the offline machine. But upon doing `tanzu plugin list --local offline-tars/` I got this error:
"Unable to discover standalone plugins from local source, error while reading local plugin manifst directory: open /root/tanzu/offline-tar-files/discovery: no such file or directory"
Doing `tanzu plugin install isolated-cluster --local offline-tars/` gives me similar issue: discovery file
What did I miss here?