diff --git a/Dockerfile b/Dockerfile
index a567e14..a4f57fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,6 +27,7 @@ RUN yum -y install \
     && rm /etc/httpd/conf.d/userdir.conf \
     && rm /etc/httpd/conf.d/welcome.conf
 
+ONBUILD
 
 COPY httpd-foreground /usr/local/bin/
 
diff --git a/tests/image.bats b/tests/image.bats
index b52fe41..bbff398 100755
--- a/tests/image.bats
+++ b/tests/image.bats
@@ -5,4 +5,8 @@ load ../common
 @test "Concludes first-run experience" {
   result="$(docker run -i $maintainer/$imagename find /tmp/firsttimerunning)"
   [ "$result" != '' ]
+}
+
+@test "Contains ONBUILD mechanism" {
+  grep ONBUILD Dockerfile
 }
\ No newline at end of file