Configuring Azure Application Proxy
Start Screen is designed to receive the current users email address in the
azure-upn header. When coupled with Single Sign On the user gets a seamless
experiance.
- Open Azure Active Directory.
- Open Applications > Enterprise Applications and select Application
Proxy from the sidebar.- If you don't already setup 1, ideally 2, connectors on site.
 
- Open Configure an app.- Set the Internal Url to http://docker.host.name:3000/
- Set the External Url to any subdomain.
- Set Pre Authentication to Azure Active Directory.
- Upload an SSL Certificate that covers the External Url.
 
- Set the Internal Url to 
- Setup the DNS Records as instructed in Configure an app.
- Once the app has been created go into it's properties and under Manage
select Single sign-on.- Choose the single sign-on mode of Header-based.
- Create the header azure-upnwith the valueuser.userprincipalname.
 
- Once saved you will be able to access the start screen at your external url with seamless single sign on.