def load_variables_file(filename)
      path = "#{Ufo.root}/.ufo/variables/#{filename}.rb"
      instance_eval(IO.read(path), path) if File.exist?(path)
    end
def load_variables_file(filename)
      path = "#{Ufo.root}/.ufo/variables/#{filename}.rb"
      instance_eval(IO.read(path), path) if File.exist?(path)
    end
Load the variables defined in ufo/variables/* to make available in the
 template blocks in ufo/templates/*.

 Example:

   `ufo/variables/base.rb`:
     @name = "docker-process-name"
     @image = "docker-image-name"

   `ufo/templates/main.json.erb`:
   {
     "containerDefinitions": [
       {
          "name": "<%= @name %>",
          "image": "<%= @image %>",
      ....
   }

 NOTE: Only able to make instance variables avaialble with instance_eval
   Wasnt able to make local variables available.