Just throwing this out there for anyone who is running HA in docker vs Home Assistant OS.
It took quite a while, but I finally got my J7+ to work. Not only did I want it added to HA, but I wanted to be able to create automations to clean individual rooms.
Most of the instructions came from here:
But even with my BLID , PASSWORD , and ROBOT_IP, I was still having trouble getting rest980 docker container to return any info about my Roomba. I finally discovered that the J7+ uses different encryption, so one additional parameter needs to be added to the docker container: ROBOT_CIPHERS=TLS_AES_256_GCM_SHA384
I now have it up and running! Hopefully this is helpful to anyone else having trouble with the J7+!