Add missing EncryptionConfiguration to the ECR Repository construct.

Use Case

I want to be able to encrypt the container images stored to ECR with a KMS customer managed key (CMK).

Proposed Solution

Add missing EncryptionConfiguration to the ECR Repository construct.

Other

This feature has been available on ECR since July 2020:

• https://aws.amazon.com/about-aws/whats-new/2020/07/ecr-supports-encryption-images-aws-kms-keys/

CloudFormation, as well as the CDK L1 construct, supports it:

• https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ecr-repository-encryptionconfiguration.html
• https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-ecr.CfnRepository.html

You can work around this with an escape hatch, but it should not be necessary.

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

This is a 🚀 Feature Request