Robomaker doesn't push docker images into ECR

A few things that could be causing this issue:

1. You didn't create the Amazon ECR repository before pushing (or you created it in a different region).
2. Your permissions aren't set properly. Make sure you are using the proper AWS credentials and that those credentials have permissions to push to ECR.

If you have AWS CloudTrail set up, you will be able to see further details on your issue in the CloudTrail event logs. For details on setting up logging with CloudTrail, see the documentation on Logging ECR actions with CloudTrail.