Amazon Elastic Container Registry (Amazon ECR) is a fully managed Docker container registry that makes it easy for developers to store, manage, and deploy Docker container images.

User Guide
Describes key concepts of Amazon ECR and provides instructions for using the features of Amazon ECR.
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ECR section of AWS CLI Reference
Documents the Amazon ECR commands available in the AWS Command Line Interface (AWS CLI).

API Reference
Describes all the API operations for Amazon ECR in detail.