Stood up a simple bookgrab + transmission at home and was able to see a yellow mam connection indicator
Added my wireguard setup to the docker compose and everything is up and when I login to the transmission container, curl icanhazip.com works as expected.
I can connect to my local vm on port 9091 for transmission but not on port 3000 for bookgrab. Containers are all up and in the transmission container, nc -v localhost 3000 works as expected over the wireguard bridge.
https://gist.github.com/alanlaird/101e7f2eb904fcaf1f9cf55413de5ff9 docker-compose.yml
It seems like bookgrab doesn't like something about this.