diff --git a/container-compose.yml b/container-compose.yml
index c23435322..2cafd4801 100644
--- a/container-compose.yml
+++ b/container-compose.yml
@@ -21,6 +21,7 @@ services:
       RACK_TIMEOUT_WAIT_TIMEOUT: 10000
       RACK_TIMEOUT_SERVICE_TIMEOUT: 10000
       STATEMENT_TIMEOUT: 10000
+      APP_DOMAIN: rails
     volumes:
       - .:/opt/apps/forem:z
       - ./.gems:/opt/apps/bundle:z
diff --git a/docker-compose.yml b/docker-compose.yml
index e9ebceaad..14a6cc677 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -21,6 +21,7 @@ services:
       RACK_TIMEOUT_WAIT_TIMEOUT: 10000
       RACK_TIMEOUT_SERVICE_TIMEOUT: 10000
       STATEMENT_TIMEOUT: 10000
+      APP_DOMAIN: rails
     volumes:
       - .:/opt/apps/forem:delegated
       - ./.gems:/opt/apps/bundle:delegated