Technically CI deploys are already possible. There's a bootstrap script you can use to install the Nanobox Desktop on the CI server, configure it for CI use, and then you can use it to run your tests if you like, and then use it to deploy your code even if you don't use it for testing.
I wish I knew more about why you're having trouble with the macOS install. It looks like it's failing somewhere in the step(s) where it installs the TAP driver for the VPN (which Nanobox Desktop uses to bridge the VM network with your computer's network). But that's not a common problem.