diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c78b111
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "docker"]
+	path = docker
+	url = git@git2.ring-zero.co.uk:docker/evolution-docker-image-builder.git
diff --git a/docker b/docker
new file mode 160000
index 0000000..4c4ed58
--- /dev/null
+++ b/docker
@@ -0,0 +1 @@
+Subproject commit 4c4ed58821b0a11b3128a6b8e53c80daa4f39df5