You have mssql for Visual Studio code as not Cross Platform, but I can confirm that it very much works on Ubuntu 16.04 (and I imagine Mac/Docker as well).
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does :-P
Please always remember to encapsulate your code in IFCode Markup. For example [code=sql] [/code]
to read Jeffs Guide on how to post SQL questions, and get swift and helpful answers from the community