diff --git a/ocis/docker-compose-eos-test.yml b/ocis/docker-compose-eos-test.yml
index dfcdba481a..46c63063c7 100644
--- a/ocis/docker-compose-eos-test.yml
+++ b/ocis/docker-compose-eos-test.yml
@@ -8,6 +8,8 @@ networks:
 services:
   ocis:
     container_name: ocis
+    ## Comment out either the 'build:' section or the 'image:' line. They are mutually exclusive.
+    ## Using an image is prefered, as this is the published way of building and faster.
     image: owncloud/eos-ocis:${EOS_OCIS_TAG:-1.0.0-rc5}
     #build:
     #  context: ./docker/eos-ocis