In our use case, we deploy AWS ASGs, that pull an AMI and pass in through userdata a specific ECR image/tag. In our pipelines to deploy these ASGs users provide the image tag that they want to deploy as an input. I want this input to be able to be a dropdown listing available ecr images. This is the behavior when you have a k8s type service but its not something we can leverage when we use an ASG type service. I want the ability to have ecr be an artifact source alongside the AMI such that when a user goes to run a pipeline that deploys an AWS ASG we are able to populate a drop down with all the ECR images that exist for an ecr repo that is associated with that service.