How to use this box with Vagrant:

Vagrant.configure("2") do |config|
  config.vm.box = "vagrant-appunite/macos10.13-xcode9.1"
  config.vm.box_version = "1.0.0"
end

vagrant init vagrant-appunite/macos10.13-xcode9.1 \
  --box-version 1.0.0
vagrant up

This version was created almost 7 years ago.

macOS 10.13 with Xcode 9.1

This is a box of macOS 10.13 (17A405) which include:

Xcode 9.1(Build version 9B55), Apple Swift version 4.0.2 (swiftlang-900.0.69.2 clang-900.0.38)
Homebrew
asdf (0.4.0)
asdf-ruby with ruby 2.4.2 installed
bundler (1.15.4)
cocoapods (1.3.1)

1 provider for this version.

virtualbox
unknown	Hosted by Vagrant Cloud (20.9 GB)

vagrant-appunite/macos10.13-xcode9.1 Vagrant box