Fixing docker issues with node:candidate

Change-Id: I16379d5d900b29a3b59a254edf4a968c45972a02
diff --git a/group_vars/all b/group_vars/all
index 2f3c749..42ae7d3 100644
--- a/group_vars/all
+++ b/group_vars/all
@@ -88,6 +88,11 @@
     dockerfile: "Dockerfile"
     pull: False
     publish: True
+  - name: "node:7.9.0"
+    path: ""
+    dockerfile: ""
+    pull: True
+    publish: False
 
 build_optional_images: False
 
@@ -99,8 +104,7 @@
 
 build_docker_tag: "candidate"
 
-misc_docker_images:
-  - "node:7.9.0"
+misc_docker_images: []
 
 enabled_gui_extensions: []