diff --git a/appengine/rails-cloudsql-mysql/app/assets/images/dummy b/appengine/rails-cloudsql-mysql/app/assets/images/.gitkeep
similarity index 100%
rename from appengine/rails-cloudsql-mysql/app/assets/images/dummy
rename to appengine/rails-cloudsql-mysql/app/assets/images/.gitkeep
diff --git a/appengine/rails-hello_world/app/assets/images/dummy b/appengine/rails-hello_world/app/assets/images/.gitkeep
similarity index 100%
rename from appengine/rails-hello_world/app/assets/images/dummy
rename to appengine/rails-hello_world/app/assets/images/.gitkeep
diff --git a/appengine/standard-rails-hello-world/app/assets/images/dummy b/appengine/standard-rails-hello-world/app/assets/images/.gitkeep
similarity index 100%
rename from appengine/standard-rails-hello-world/app/assets/images/dummy
rename to appengine/standard-rails-hello-world/app/assets/images/.gitkeep