Tag AWS ECR (Elastic Container Registry) images from a feed with a deployment tag
Amazon's ECR (Elastic Container Registry) is a docker-compatible registry that you can configure as a first-class package feed in Octopus. Part of the ECR product (in AWS) is to set up lifecycle policies so it can automatically delete old images (since it takes up space for each image). This is a similar feature that Octopus offers on its own built-in package registry, but the ECR is obviously an external registry so the purging has to managed by AWS (and no Octopus). But ECR has no way of knowing which images are used (so they won't get deleted), except if you specify a new tag on the used images (like deploy-Stage for example), then you can exclude those.
Currently I can do that with a custom step, but it would be nice (since ECR is a 1st class feed now) to have a checkbox that would do this automatically in Octopus so it would be easier for users to enable this.