config.vm.define box, define_opts do |config|
      config.vm.box = 'elastic/fedora-28-x86_64'
      dnf_common config, box
      dnf_docker config
    end
  end
  'fedora-29'.tap do |box|
    config.vm.define box, define_opts do |config|
      config.vm.box = 'elastic/fedora-29-x86_64'
      dnf_common config, box
      dnf_docker config
    end
  end
  'opensuse-42'.tap do |box|