Use code from GIT repository in container

[alespouzar]

I want to create a training job with my custom Docker image that would run up-to-date code (train script) from CodeCommit repository (as I want to avoid building Docker image each time I update code). I'm trying to utilize GIT integration that is documented e.g. here. However the code from GIT repository is not mounted to container (it should be in /opt/ml/code directory as I understand from documentation). Did I get something wrong? Is this working only in local mode?