https://github.com/oraclebase/dockerfiles
I always install APEX into every database, so the database builds include APEX and the ORDS build includes the APEX images.
Remember, I’m not saying you should use these, but if you like to play around with Docker you might find them useful, along with my Docker articles here.
Regardless of how you like to use APEX, get on board with APEX 18.1… 🙂
Cheers
Tim…