I solved my SignalR issue in V2 by adding the environment variable - XDG_CONFIG_HOME=/tmp/xdg in my docker-compose file as per https://github.com/linuxserver/docker-sonarr/issues/88
However, this is not working for the preview tag. It is still creating the .config/.mono/keypairs directory in my volume mapped to config. In the js console I don’t get the 500 errors, but I only ever see the SignalR: connecting message. No connected messages. No error in the sonarr logs.
Is there another method in docker-compose to remap the mono keypairs into the container?