Port-an-existing-app-to-OOD.md

@@ -66,6 +66,10 @@ i.e. `AwesimRails.dataroot` is replaced by `OodAppkit.dataroot`. The easy way to
 
 In Container Fill Sim, here is an example commit: https://github.com/AweSim-OSC/containerfillsim/pull/64/commits/5ee2a9f9289eccdc89782fa2d2cbd93dfa5d2bdd
 
+After completing these steps, delete the `Gemfile.lock` file and run `bundle install` from the dashboard web app or run this command:
+
+    scl enable rh-ruby22 nodejs010 -- bin/bundle install --path=vendor/bundle
+
 #### 4. Update documentation if you have it to use /wiki instead of /docs
 
 1. Clone the docs to /wiki