adding a docker registry to the head node

Change-Id: I9509b32c00c097259b83a802ab35f8c529a95947
diff --git a/roles/registry/files/mirror-config.yml b/roles/registry/files/mirror-config.yml
new file mode 100644
index 0000000..65ff62c
--- /dev/null
+++ b/roles/registry/files/mirror-config.yml
@@ -0,0 +1,23 @@
+version: 0.1
+log:
+  fields:
+    service: registry
+storage:
+  cache:
+    blobdescriptor: inmemory
+  filesystem:
+    rootdirectory: /var/lib/registry
+  delete:
+    enabled: true
+http:
+    addr: :5000
+    headers:
+        X-Content-Type-Options: [nosniff]
+health:
+  storagedriver:
+    enabled: true
+    interval: 10s
+    threshold: 3
+
+proxy:
+  remoteurl: https://registry-1.docker.io