[patch] add support for creating required repositories in aws ecr

[terenceq]

AWS Elastic Container Registry mirroring support

Provide support for mirroring images to AWS Elastic Container Registry (ECR) instances.

Description

This PR directly depends on the ansible-devops PR:

• [minor] Add support for image mirroring to AWS ACR ansible-devops#1791

Modifications have been made to the cli commands mirror_images and mirror_redhat to support mirroring to ECR.

Two new options have been added to each of the mirroring commands:

      # AWS Elastic Container Registry
      -e|--target-is-ecr)
        REGISTRY_IS_ECR=true
        ;;
      -r|--aws-ecr-region)
        REGISTRY_ECR_AWS_REGION=$1 && shift
        ;;

which are used to indicate that ECR is the target registry and the region where the AWS ECR instance is located.

A pre-requisite is the configure the AWS CLI command line with the applicable credentials. This is required so that the AWS CLI can be used to create the required repositories in the ECR instance. An ECR token must also be obtained - and then the mirroring commands can be invoked similar to:

#!/bin/bash

# Destination registry
export REGISTRY_PRIVATE_HOST=<ecr host>
export REGISTRY_PREFIX=250501
export REGISTRY_PRIVATE_PORT=443
export REGISTRY_USERNAME=AWS
export REGISTRY_PASSWORD=<ecr login token>

MIRROR_TARGET_IS_ECR=true
AWS_ECR_REGION=us-east-1

# Source registry
export IBM_ENTITLEMENT_KEY=<your IBM entitlement key>


mas mirror-images \
  --mode to-filesystem \
  --dir /tmp/mirror \
  -H $REGISTRY_PRIVATE_HOST -P $REGISTRY_PRIVATE_PORT \
  -u $REGISTRY_USERNAME -p $REGISTRY_PASSWORD \
  -c v9-250501-amd64 \
  -C 9.0.x \
  --no-confirm \
  -e \
  -r $AWS_ECR_REGION \
  -x $REGISTRY_PREFIX \
  --mirror-db2

Test Results

Successfully mirrored several catalogs/channels to various AWS ECR instances.

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