UPDATE: Now the agent-services is working 🙂 I was able to solve it by providing CLEARML_API_HOST: ${CLEARML_API_HOST:- None } in my docker-compose instead of CLEARML_API_HOST: None , where the environment variable CLEARML_API_HOST was set as my public api address. So in other words, the traffic is going through the internet, back to the server (same machine) and now it seems to be working. Thanks @<1593051292383580160:profile|SoreSparrow36> and @<1523701087100473344:profile|SuccessfulKoala55>