feat: Make the TURN realm configurable via environment variable and ensure the viewer only reacts to the broadcaster's disconnection.

docker-compose.yml

@@ -10,6 +10,7 @@ services:
       - BROADCASTER_PASSWORD=${BROADCASTER_PASSWORD}
       - TURN_USER=${TURN_USER}
       - TURN_PASSWORD=${TURN_PASSWORD}
+      - TURN_REALM=${TURN_REALM}
 
   coturn:
     image: coturn/coturn:latest
@@ -20,6 +21,6 @@ services:
       --log-file=stdout
       --min-port=49152
       --max-port=49252
-      --realm=yourdomain.com
+      --realm=${TURN_REALM}
       --user=${TURN_USER}:${TURN_PASSWORD}
       --stale-nonce