Figured out how to get this set up from an initial install tonight.
Did the above, removing the config files and adding the custom variables.
After the initial container is set up and running, open the console and
cd /fr24feed/fr24feed
in there is the fr24feed binary, then run
./fr24feed --signup
and configure like you would a new install on a raspberry pi to get your share key, all is working smoothly now