Add traefik config for authentik

traefik/config/services/authentik.yml

@@ -0,0 +1,15 @@
+# /services/traefik/config/services/authentik.yml
+
+http:
+  routers:
+    auth:
+      entryPoints:
+        - https
+      rule: Host(`auth.eliasfink.de`)
+      service: authentik
+
+  services:
+    authentik:
+      loadBalancer:
+        servers:
+          - url: http://authentik_server:9000