docs: def process_copies(input_dir, target_dir, excludes):
      """
      _process_copies_
  
      Handles files to be copied across, assumes
      that dir structure has already been replicated
  
      """
      copies = find_copies(input_dir, excludes)
      for c in copies:
          output_file = c.replace(input_dir, target_dir)
          copy_file(c,  output_file)