outposts: support different port on container vs exposed port

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/outposts/controllers/base.py

@@ -1,5 +1,6 @@
 """Base Controller"""
 from dataclasses import dataclass
+from typing import Optional
 
 from structlog.stdlib import get_logger
 from structlog.testing import capture_logs
@@ -23,6 +24,7 @@ class DeploymentPort:
     port: int
     name: str
     protocol: str
+    inner_port: Optional[int] = None
 
 
 class BaseController: