code: def subcmd_build_parser(subcmd):
      
      subcmd.add_argument(
          '--tag',
          action='store',
          dest='tag',
          help=u'Tag of APB to build (ie. mysql-apb or docker.io/username/mysql-apb)'
      )
  
      subcmd.add_argument(
          '--dockerfile',
          '-f',
          action='store',
          dest='dockerfile',
          help=u'Name of Dockerfile to build with'
      )
  
      return
docs: build subcommand