Drop unused env vars

.env.sample

@@ -1,8 +1,6 @@
 TYPE=peertube
 
 DOMAIN=peertube.example.com              # <= EDIT THIS
-## Domain aliases
-#EXTRA_DOMAINS=', `www.peertube.example.com`'
 LETS_ENCRYPT_ENV=production
 
 PEERTUBE_WEBSERVER_PORT=443

compose.yml

@@ -23,7 +23,7 @@ services:
       labels:
         - "traefik.enable=true"
         - "traefik.http.services.${STACK_NAME}.loadbalancer.server.port=80"
-        - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`${EXTRA_DOMAINS})"
+        - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`)"
         - "traefik.http.routers.${STACK_NAME}.entrypoints=web-secure"
         - "traefik.http.routers.${STACK_NAME}.tls.certresolver=${LETS_ENCRYPT_ENV}"
     healthcheck: