How to make ECR repository public?

Amazon just released support for public ECR repositories!

https://aws.amazon.com/blogs/aws/amazon-ecr-public-a-new-public-container-registry/

check out https://github.com/monken/aws-ecr-public. It's a solution that provisions a serverless API Gateway to make ECR repositories public. It also supports custom domains.

Amazon ECR currently supports private images. See official AWS ECR FAQ:

https://aws.amazon.com/ecr/faqs/

Q: Can Amazon ECR host public container images?

Amazon ECR currently supports private images. However, using IAM resource-based permissions, you can configure policies for each repository to allow access to IAM users, roles, or other AWS accounts.

You can use Docker Hub or other public repositories.

https://hub.docker.com/