diff --git a/.drone.yml b/.drone.yml
index add7dd2..3050e0d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -47,5 +47,6 @@ steps:
         from_secret: docker_repo
       tags:
         - latest
+        # https://docs.drone.io/pipeline/environment/reference/
         - ${DRONE_COMMIT_SHA:0:10}
         - ${DRONE_TAG}