ACR authentication using Office365 accounts
Many organizations use Office365 accounts and groups as authentication backend (Active Directory).
It is not possible to define those users as ACR users as Azure subscription is needed.
Goal is that Office365 users should use ACR as service and pull images, not to manage it thru portal or az cli.
For now docker login does work only for Admin or Service Principle accounts.
This functionality is required to use ACR as production grade service to support the end customers.