It’s all here:
Once it is installed, running the SQL server is done with this command to kick off the Docker server and then the cli:
mssql -u sa -p ‘YourAwesomePassword’.
Since I did the default installation setup in the article above, my server is ‘localhost’ on port 1433.
I also installed SQL Operations Studio (SQLOPS) on my Mac to have a GUI interface for managing my databases on that Docker image.