Feature Request: Set ECR Lifecycle when deploying a lambda with a docker image

I am following[this guide](https://aws.amazon.com/blogs/compute/using-container-image-support-for-aws-lambda-with-aws-sam/) to create a SAM template that deploys a lambda based on a Dockerfile. However, each `sam deploy` creates a new image, which causes me to pay for multiple old registries until I manually delete them. Is there a way to make a policy to retain only the past five containers, or even better the last 30 days of containers?