Hi GreasyPenguin14 ,
The reason for this is the Services Agent is not aware of the WebApp address, and tries to guess by using the ApiServer address (which internally, in docker-compose, is http://apiserver:8008 ) by replacing the port to 8080 .
To fix it, you simply need to specify the correct address by which the WebApp can be accessed when starting the server using docker-compose .

The easiest way to do that is to set the environment variable CLEARML_WEB_HOST before starting docker-compose, in your case:
> CLEARML_WEB_HOST= docker-compose -f /opt/clearml/docker-compose.yml up -d