ECR supports Docker Registry HTTP API V2 allowing you to use Docker CLI commands or your preferred Docker tools in maintaining your existing development workflow.
ECR stores both the containers you create and any container software you buy through AWS Marketplace.
ECR stores your container images in Amazon S3.
ECR supports the ability to define and organize repositories in your registry using namespaces.
You can transfer your container images to and from Amazon ECR via HTTPS.
A registry is provided to each AWS account; you can create image repositories in your registry and store images in them.
The URL for your default registry is https://aws_account_id.dkr.ecr.region.amazonaws.com.
You must be authenticated before you can use your registry.
Your Docker client needs to authenticate to ECR registries as an AWS user before it can push and pull images. The AWS CLI get-login command provides you with authentication credentials to pass to Docker.
An image repository contains your Docker images.
ECR uses resource-based permissions to let you specify who has access to a repository and what actions they can perform on it.
ECR lifecycle policies enable you to specify the lifecycle management of images in a repository.
You can control access to your repositories and the images within them with repository policies.
You can push and pull Docker images to your repositories. You can use these images locally on your development system, or you can use them in ECS task definitions.
You can replicate images in your private repositories across AWS regions.
By default, IAM users don’t have permission to create or modify Amazon ECR resources, or perform tasks using the Amazon ECR API.
Use IAM policies to grant or deny permission to use ECR resources and operations.
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