diff --git a/docker/README.md b/docker/README.md
index 23093d357594d676fe57fc0eced7888703a8a6a1..e4d56cdb33676b50b4154eb49359e666757ff857 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -165,3 +165,5 @@ sudo docker push gitlab/gitlab-ce:latest
 Please see the [troubleshooting](troubleshooting.md) file in this directory.
 
 Note: We use `fig.yml` to have compatibility with fig and because docker-compose also supports it.
+
+Our docker image runs chef at every start to generate GitLab configuration.