diff --git a/docker/CentOS-6-git-builder/README.md b/docker/CentOS-6-git-builder/README.md
new file mode 100644
index 00000000..dfa2659d
--- /dev/null
+++ b/docker/CentOS-6-git-builder/README.md
@@ -0,0 +1 @@
+sudo docker build -t barrier:centos6-git-builder .
diff --git a/docker/CentOS-6-release-builder/README.md b/docker/CentOS-6-release-builder/README.md
new file mode 100644
index 00000000..26e9194f
--- /dev/null
+++ b/docker/CentOS-6-release-builder/README.md
@@ -0,0 +1 @@
+sudo docker build -t barrier:centos6-release-builder .