I suspect I know the answer, but you don’t get what you don’t ask for. 
I am making use of the official Oracle Java image. This requires you to jump through a few hoops on the Docker store.
Can a Docker Hub automated build linked to a Github account somehow be configured to include whatever header information is required to authenticate to the store such that the automated build will work? Right now my derivative image won’t build, because the initial FROM layer results in an authorization failure.
I’m guessing that my only option is a manual push, and clearly anyone pulling my derivative image must also have jumped through the hoops required by the Oracle official Java image.
Thanks,
Best,
Laird