Update README.md

add some notes

examples/authentik/README.md

@@ -1,3 +1,14 @@
 # References
 
 - https://goauthentik.io/docs/installation/
+- https://blog.lrvt.de/authentik-traefik-azure-ad/
+
+# Notes
+
+After spawning up this Authentik stack, you will be greeted by Authentik's login dashboard. However, you have to onboard an admin user first. 
+
+This is done by visiting the following URL: 
+
+````
+http(s)://<myserver>/if/flow/initial-setup
+````