Add user email filtering logic.

.traefik.yml

@@ -45,6 +45,10 @@ testData:
     - company.com
     - subsidiary.com
 
+  allowedUsers: # Restricts access to specific email addresses regardless of domain
+    - [email protected]
+    - [email protected]
+
   allowedRolesAndGroups: # Restricts access to users with specific roles or groups (if not provided, no role/group restrictions)
     - guest-endpoints
     - admin
@@ -215,6 +219,21 @@ configuration:
     items:
       type: string
 
+  allowedUsers:
+    type: array
+    description: |
+      Restricts access to specific email addresses.
+      If provided, only users with these exact email addresses will be allowed access,
+      in addition to any domain-level restrictions set by allowedUserDomains.
+      
+      This provides fine-grained control over individual access and can be used
+      together with allowedUserDomains for flexible access control strategies.
+
+      Examples: ["[email protected]", "[email protected]"]
+    required: false
+    items:
+      type: string
+
   allowedRolesAndGroups:
     type: array
     description: |