You can make a virtual machine very easily but it performs very poorly: https://github.com/myspaghetti/macos-virtualbox https://github.com/myspaghetti/macos-vi

You can make a virtual machine very easily but it performs very poorly: https://github.com/myspaghetti/macos-virtualbox https://github.com/myspaghetti/macos-virtualbox Or you can lease them online: http://macstadium.com/ http://macstadium.com/ GitHub has some kind of Mac hardware or virtualization for their Actions too so you could probably wire something up to build on GitHub: https://github.com/marketplace/actions/setup-swift https://github.com/marketplace/actions/setup-swift