docker-compose up --build -d
docker exec -it mumpsexploring_mumps bash
root@33dce04c88ad:/tmp/gtm# gtm
GTM>WRITE "Hello, world"
Hello, world
GTM>WRITE !,"Hello, world"
Hello, world
GTM> hult
root@33dce04c88ad:/tmp/gtm#
root@33dce04c88ad:/tmp/gtm# mumps
Mumps Native client version 17.11 Hardware Math: no
http://threadsafebooks.com/
Enter HALT to exit
GTM>WRITE !,"Hello, world"
Hello, world
GTM>> hult
root@33dce04c88ad:/tmp/gtm# mumps