This container's sole purpose is to demonstrate Kerberized NFS, i.e. mount the /users directory with sec=krb5p.
If you have trouble mounting the NFS share the first time you run the playbook, try restarting the container.
Observe how you must login as a user with a password to "unlock" that user's
home directory. Even if you are root and you switch to that user using
you will not be able to access their files since you do not have a Kerberos
ticket for that user.