Add documentation about how to avoid NFS prompt
Add documentation about how to avoid NFS prompt

Bug: T137757
Change-Id: Ifa5cd97ff1bda9924b9434af60a1d77b3e4cd6da

wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant