new_contents: #!/usr/bin/env python3
  
  import os
  import sys
  import yaml
  
  try:
      from cStringIO import StringIO
  except ImportError:
      from io import StringIO
  from em import Interpreter
  
  from docker_templates.argparse import DockerfileArgParser
  from docker_templates.create import create_files
  from docker_templates.collections import OrderedLoad
  from docker_templates.packages import expandPackages
  
  def main(argv=sys.argv[1:]):
      """Create Dockerfiles for images from platform and image yaml data"""
  
      # Create the top-level parser
      parser = DockerfileArgParser(
          description="Generate the 'Dockerfile's for the base docker images")
      parser.set()
      args = parser.parse(argv)
  
      # Read platform params
      with open(args.platform, 'r') as f:
          # use safe_load instead load
          platform = yaml.safe_load(f)['platform']
  
      # Read image params using platform params
      images_yaml = StringIO()
      try:
          interpreter = Interpreter(output=images_yaml)
          interpreter.file(open(args.images, 'r'), locals=platform)
          images_yaml = images_yaml.getvalue()
      except Exception as e:
          print("Error processing %s" % args.images)
          raise
      finally:
          interpreter.shutdown()
          interpreter = None
      # Use ordered dict
      images = OrderedLoad(images_yaml, yaml.SafeLoader)['images']
  
      # For each image tag
      for image in images:
  
          # Get data for image
          data = dict(images[image])
          data['tag_name'] = image
  
          # Add platform params
          data.update(platform)
  
          # Apply package distro/version formatting
          expandPackages(data)
  
          # Get path to save Docker file
          dockerfile_dir = os.path.join(args.output, image)
          if not os.path.exists(dockerfile_dir):
              os.makedirs(dockerfile_dir)
          data['dockerfile_dir'] = dockerfile_dir
  
          # generate Dockerfile
          create_files(data)
  
  if __name__ == '__main__':
      main()
  
subject: Add back helper script