diff --git a/images/docker-kasm.md b/images/docker-kasm.md
index 82e87103b3..56a71c4c2f 100755
--- a/images/docker-kasm.md
+++ b/images/docker-kasm.md
@@ -48,6 +48,8 @@ This image provides various versions that are available via tags. Please read th
 
 This container uses [Docker in Docker](https://www.docker.com/blog/docker-can-now-run-within-docker/) and requires being run in `privileged` mode. This container also requires an initial setup that runs on port 3000.
 
+**Unlike other containers the web interface port (default 443) needs to be set for the env variable `KASM_PORT` and both the inside and outside port IE for 4443 `KASM_PORT=4443` `-p 4443:4443`**
+
 Access the installation wizard at https://`your ip`:3000 and follow the instructions there. Once setup is complete access https://`your ip`:443 and login with the credentials you entered during setup. The default users are:
 
 * admin@kasm.local