Ethan Waldo has run the scripts successfully under Docker :-)

version: '3'
services:
  ghdl:
    image: ghdl/ghdl:ubuntu18-llvm-5.0
    volumes:
      - .:/src
    working_dir: /src

I have no experience with it but I'll add the above configuration file in the README.txt if people want to use containers.

GHDL has awesome strengths and it shows again :-) and it's only the beginning.