fix: use network_mode host for container networking

ABP framework requires access to host network for DB/Redis connections

Jenkinsfile

@@ -54,9 +54,7 @@ services:
   rag-backend:
     image: ${CI_REGISTRY}/${DOCKER_IMAGE}:latest
     container_name: rag-backend
-    ports:
-      - "5211:5211"
-      - "50051:50051"
+    network_mode: host
     restart: unless-stopped
     environment:
       - ASPNETCORE_ENVIRONMENT=Production