diff --git a/.gitmodules b/.gitmodules
index 1570bc44..e6ebc826 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -22,3 +22,12 @@
 [submodule "vendor/github.com/ugorji/go"]
 	path = vendor/github.com/ugorji/go
 	url = https://github.com/ugorji/go
+[submodule "vendor/github.com/purpleidea/docker"]
+	path = vendor/github.com/docker/docker
+	url = https://github.com/purpleidea/docker
+[submodule "vendor/github.com/purpleidea/distribution"]
+	path = vendor/github.com/docker/distribution
+	url = https://github.com/purpleidea/distribution
+[submodule "vendor/github.com/purpleidea/go-connections"]
+	path = vendor/github.com/docker/go-connections
+	url = https://github.com/docker/go-connections
diff --git a/vendor/github.com/docker/distribution b/vendor/github.com/docker/distribution
new file mode 160000
index 00000000..05e97590
--- /dev/null
+++ b/vendor/github.com/docker/distribution
@@ -0,0 +1 @@
+Subproject commit 05e9759077b787f60951a2ea12136d6f4933296e
diff --git a/vendor/github.com/docker/docker b/vendor/github.com/docker/docker
new file mode 160000
index 00000000..44519733
--- /dev/null
+++ b/vendor/github.com/docker/docker
@@ -0,0 +1 @@
+Subproject commit 445197336ebfc341fe1c922410324422b5722328
diff --git a/vendor/github.com/docker/go-connections b/vendor/github.com/docker/go-connections
new file mode 160000
index 00000000..97c2040d
--- /dev/null
+++ b/vendor/github.com/docker/go-connections
@@ -0,0 +1 @@
+Subproject commit 97c2040d34dfae1d1b1275fa3a78dbdd2f41cf7e