Vagrantfile to spin up a RHEL 8 VM and register with RHN via subscription-manager.
To register with subscription-manager a free RedHat Developer subscription is required. This Vagrantfile expects to find the credentials in environment variables called RH_SUBSCRIPTION_MANAGER_USER and RH_SUBSCRIPTION_MANAGER_PW. Ensure these are exported and available to Vagrant, the Vagrantfile will abort if these are not set.
Using the current latest versions of Vagrant and VirtualBox on MacOS, the version of VirtualBox Guest Additions is newer than the version packaged in roboxes/rhel8. Vagrant will try and update this before the VM has been registered with RHN so all calls to yum install fail. For this reason config.vbguest.auto_update = false is configured.
