@ronan-a oop-good to know. Now I guess I need to figure out why the new image i created is exiting instead of, well, working.
Unless there's something in this command that I shouldn't be invoking.
podman create --health-cmd="wget --no-verbose --tries=1 --spider http://127.0.0.1:8080/ || exit 1" --volume=/root/mjolnir:/data:Z matrixdotorg/mjolnir
(I start it separately, later)