Socket Access in Unprivileged Containers With Tmux

I also posted this in the Proxmox forums, but it hasn’t gotten any traction there.

I have attempted to start up a tmux session (i.e. tmux -L socket_name new-session -c /usr/local/bin/application -s session_name -d command ) within an Ubuntu container and, while the process starts, I cannot connect to the socket with tmux. The socket is created as /tmp/tmux-1000/session_name= but tmux doesn’t know it’s there.

Is there anything about the container security model which prevents this? I suspect so. It works when I don’t specify a socket. Which logs could I look to for further troubleshooting?