Hi @<1593051292383580160:profile|SoreSparrow36> , thanks a lot! I ran docker network connect backend clearml-agent-services and got the response:
Error response from daemon: endpoint with name clearml-agent-services already exists in network clearml_backend
It was expected because my docker-compose had the entry

  agent-services:
    networks:
      - backend 

I can also resolve and curl None from the clearml-agent-services container.

I managed to access my public backend with other external workers not running in services mode.