Wanna run macOS in a Docker container? SickCodes have done all the hard work and published it on GitHub. You can choose from all versions of macOS all the way back to High Sierra. The main purpose is for security research (testing your sweet 0-days I guess) but it's also useful if you just want a command line version of macOS, something to run iMessage on, or a fully blown macOS environment with a GUI and all that supports X11 forwarding. Documentation looks solid too, shouldn't be too much of a pain to get going unless you've never used Docker before.
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