diff --git a/docker-compose.yml b/docker-compose.yml
index 94f00eb..f037d5b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,7 +29,7 @@ services:
       - ./nginx:/etc/nginx
       - ./html:/var/www/html:ro
       - ssl-certs:/etc/ssl:ro
-    ports:
+    ports: # IPs that accept client (HTTP) connections
       - "203.0.113.1:80:80"
       - "[2001:db8::1]:80:80"
       - "203.0.113.1:443:443"