This runs the TK4- distribution of MVS 3.8J and any z/OS ADCD DASDs inside Docker.
All credit belongs to Juergen Winkelmann for creating TK4-, Volker Bande for creating TK3, the Hercules team for creating Hercules, IBM for creating MVS and z/OS, etc. - all I did was package it into a Docker container.
These scripts and Dockerfiles are into the public domain, see LICENSE for details. TK4-, z/OS and Hercules remain under their respective copyright licenses.