diff --git a/docker/CentOS-7-git-builder/README.md b/docker/CentOS-7-git-builder/README.md
new file mode 100644
index 00000000..59b637d1
--- /dev/null
+++ b/docker/CentOS-7-git-builder/README.md
@@ -0,0 +1 @@
+sudo docker build -t barrier:centos7-git-builder .
diff --git a/docker/debian9-git-builder/README.md b/docker/debian9-git-builder/README.md
new file mode 100644
index 00000000..a65408f1
--- /dev/null
+++ b/docker/debian9-git-builder/README.md
@@ -0,0 +1,2 @@
+sudo docker build -t barrier:debian9-git-builder .
+
diff --git a/docker/fedora27-git-builder/README.md b/docker/fedora27-git-builder/README.md
new file mode 100644
index 00000000..889e7b99
--- /dev/null
+++ b/docker/fedora27-git-builder/README.md
@@ -0,0 +1 @@
+sudo docker build -t barrier:fedora27-git-builder .