[CORD-1184] Moving node image to 7.9.0

Change-Id: Id5df46a5bec7ccfde4c9fc7a1b4af2d3bc587a15
diff --git a/group_vars/all b/group_vars/all
index 047452d..f832a21 100644
--- a/group_vars/all
+++ b/group_vars/all
@@ -79,7 +79,7 @@
 build_docker_tag: "candidate"
 
 misc_docker_images:
-  - "node:argon"
+  - "node:7.9.0"
 
 enabled_gui_extensions: []