December 10, 2017

Docker image tagging in ECR

AWS provides a docker repository called ECR. This is similar to Docker Hub, Artifactory etc and provides a convenient place to place docker images for later use e.g. deployment. ECR supports Docker Image Manifest V2, Schema 2, providing the ability to add multiple tags per image. I recently ran into an issue wherein I tagged an image with multiple tags at build time and then just pushed one tag, thinking all tags would appear on ECR.