Unsure if it will help much, but my install is also hosed as expecting. Error log being generate by Log under Dockers Menu is:
Feb 19 09:55:49 Tower nginx: 2019/02/19 09:55:49 [error] 7603#7603: *3148358 connect() to unix:/var/tmp/UniFi-Video.sock failed (111: Connection refused) while connecting to upstream, client: 172.27.232.2, server: , request: "GET /dockerterminal/UniFi-Video/ws HTTP/1.1", upstream: "http://unix:/var/tmp/UniFi-Video.sock:/ws", host: "192.168.101.3:1447"
I'm getting blasted with this every 3 to 5 seconds when the docker is running. Hope this helps!
Downy