statusReason 
  Additional information about a container group definition that's in FAILED status. Possible reasons include:
- An internal issue prevented Amazon GameLift Servers from creating the container group definition resource. Delete the failed resource and call CreateContainerGroupDefinitionagain. 
- An access-denied message means that you don't have permissions to access the container image on ECR. See IAM permission examples for help setting up required IAM permissions for Amazon GameLift Servers. 
- The - ImageUrivalue for at least one of the containers in the container group definition was invalid or not found in the current Amazon Web Services account.
- At least one of the container images referenced in the container group definition exceeds the allowed size. For size limits, see Amazon GameLift Servers endpoints and quotas. 
- At least one of the container images referenced in the container group definition uses a different operating system than the one defined for the container group.