diff --git a/build/install/docker/.env b/build/install/docker/.env
index 9fe970c9db..a0c8dec4cd 100644
--- a/build/install/docker/.env
+++ b/build/install/docker/.env
@@ -11,6 +11,7 @@
     SERVICE_PORT=5050
     DOCUMENT_SERVER_IMAGE_NAME=onlyoffice/4testing-documentserver-ee:latest
     DOCKERFILE=Dockerfile.app
+    APP_DOTNET_ENV=""
 
 # zookeeper #
     ZOO_PORT=2181