Merge pull request #7890 from nextcloud/caddyfile-le-challenge-comment

Add an explanation why we disable the HTTP challenge in that Caddy instance

Containers/apache/Caddyfile

@@ -75,6 +75,8 @@ http://{$APACHE_HOST}.nextcloud-aio:23973, # For Collabora callback and WOPI req
     tls {
         issuer acme {
             profile shortlived
+            # Disable HTTP challenge because that would require port 80, which we don't get (it's exposed to the mastercontainer).
+            # This container by default only exposes port 443 if not configured otherwise via APACHE_PORT.
             disable_http_challenge
         }
     }