diff --git a/images/builder/docker/custom-docker-builder/Dockerfile b/images/builder/docker/custom-docker-builder/Dockerfile
index 3ab16c311f8f..47d342c199fe 100644
--- a/images/builder/docker/custom-docker-builder/Dockerfile
+++ b/images/builder/docker/custom-docker-builder/Dockerfile
@@ -1,5 +1,6 @@
-#
-# This is the image that executes a Docker build inside Origin. It expects a set of
+# This image is intended for testing purposes, it has the same behavior as
+# the origin-docker-builder image, but does so as a custom image so it can
+# be used with Custom build strategies.  It expects a set of
 # environment variables to parameterize the build:
 #
 #   OUTPUT_REGISTRY - the Docker registry URL to push this image to
@@ -8,15 +9,14 @@
 #   SOURCE_REF - a reference to pass to Git for which commit to use (optional)
 #
 # This image expects to have the Docker socket bind-mounted into the container.
-# If "/root/.dockercfg" is bind mounted in, it will use that as authorization to a
-# Docker registry.
+# If "/root/.dockercfg" is bind mounted in, it will use that as authorization 
+# to a Docker registry.
 #
 # The standard name for this image is openshift/origin-custom-docker-builder
 #
-FROM centos:centos7
-
-RUN yum install -y --enablerepo=centosplus epel-release gettext tar automake make git docker
+FROM openshift/origin-base
 
+RUN yum install -y --enablerepo=centosplus gettext automake make docker
 ENV HOME /root
 ADD ./build.sh /tmp/build.sh
 CMD ["/tmp/build.sh"]