Docker solves the problems in some cases. However it forces you to ignore those knotty compatibility issues which is limiting. (You can't run on *BSD, Mac, windows... if you use docker) As such for many docker is not in the list of acceptable answers - in particular any open source project should consider docker not an option to solve their problems.

My understanding of the post I was replying to was that the compatibility issues were due to different versions of Linux having different clang versions. If I've understood correctly then Docker is highly likely to be a good solution.

> any open source project should consider docker not an option to solve their problem

That's generalising far too much.