fix docker-compose prod ROOT_FQDN var

docker-compose.yml

@@ -4,8 +4,8 @@ services:
     build:
       context: .
       dockerfile: front/Dockerfile
-    args:
-      VUE_APP_ROOT_FQDN: ${ROOT_FQDN}
+    environment:
+      VUE_APP_ROOT_FQDN: ${SERVICE_ROOT_FQDN}
     ports:
       - 80:80
     depends_on: