docs: def render_template(template_in, file_out, context):
      """
      _render_template_
  
      Render a single template file, using the context provided
      and write the file out to the location specified
  
      #TODO: verify the template is completely rendered, no
         missing values
  
      """
      renderer = pystache.Renderer()
      result = renderer.render_path(template_in, context)
      with open(file_out, 'w') as handle:
          LOGGER.info('Rendering: {} to {}'.format(template_in, file_out))
          handle.write(result)
      shutil.copymode(template_in, file_out)