Hi @<1546665634195050496:profile|SolidGoose91> , the way to go about that (anywhere where a ClearML Agent is involved, which includes clearml-session) is to provide the full docker image name (i.e. including the repository) and making sure the agent pulling the image either runs on an EC2 machine with a role allowing it to access the repository (or credentials provided in a configuration file), and an initial bash script for the agent container itself calling docker login at a first step.