diff --git a/docker/.env.example b/docker/.env.example
index b65385d..e575350 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -1,4 +1,6 @@
 BACKEND_URL=https://backend.example.com
 FRONTEND_URL=https://example.com
+BACKEND_DOMAIN=backend.example.com
+FRONTEND_DOMAIN=example.com
 SESSION_DOMAIN=.example.com
 APP_KEY=SOME-KEY
\ No newline at end of file