diff --git a/README.md b/README.md
index fce6ce3..70d83a3 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,9 @@ thanek/nextcloud-dlna
 or, if used together with the official Nextcloud docker image using the docker-composer. See the [examples](./examples)
 directory. for more details about running nextcloud-dlna server in the docker container.
 
-You can pass to the container other env variables that are listed below.
+While using docker, you can pass to the container the `NC_DOMAIN` and `NC_PORT` environment variables and force the container 
+to check and wait for the nextcloud HTTP server to appear on the specified domain and port address.
+You can also pass to the container other env variables that are listed below.
 
 Note that it would not work on Mac OS since docker is a Linux container and the `host` networking mode doesn't actually
 share the host's network interfaces.