prefix

The repository namespace prefix to associate with the template. All repositories created using this namespace prefix will have the settings defined in this template applied. For example, a prefix of prod would apply to all repositories beginning with prod/. Similarly, a prefix of prod/team would apply to all repositories beginning with prod/team/.

To apply a template to all repositories in your registry that don't have an associated creation template, you can use ROOT as the prefix.

There is always an assumed / applied to the end of the prefix. If you specify ecr-public as the prefix, Amazon ECR treats that as ecr-public/. When using a pull through cache rule, the repository prefix you specify during rule creation is what you should specify as your repository creation template prefix as well.