A helper CLI to help with retagging process of ECR images i.e. moving 'latest' tag from image A to image B

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Usage

$ ecr-image-retag --help

A helper CLI to help with retagging process of ECR images i.e. moving 'latest' tag from image A to image B

Usage:
  ecr-image-retag [flags]

Flags:
  -e, --ecr-repo string           The AWS ECR repo name containing the images
  -h, --help                      help for ecr-image-retag
  -d, --new-image-digest string   The new image digest that will receive the --tag-name
  -p, --profile string            The AWS profile name from ~/.aws/credentials file
  -r, --region string             The AWS region where the ECR repo is located
  -t, --tag-name string           The tag name that will be dropped from current images and to be applied to --new-image-digest
  -v, --version                   version for ecr-image-retag

Example

The following example command will move the latest tag from image(s) in my-repo ECR repository to an image with digest sha256:66386bebbfe612be82286dc40e4fbb10f93ab85ad8c13d00dd73dfe822e32a01 in the same ECR repository.

$ ecr-image-retag --ecr-repo my-repo --new-image-digest sha256:66386bebbfe612be82286dc40e4fbb10f93ab85ad8c13d00dd73dfe822e32a01 --profile my-aws-profile --region ap-southeast-1 --tag-name latest

Assumptions

This CLI assumes that you have at least one profile under ~/.aws/credentials path containing AWS Access Key ID and Secret Access Key like this:

[my-aws-profile]
aws_access_key_id = XXX
aws_secret_access_key = XXX
region = ap-southeast-1

IAM Policy

The user for the --profile should have the following permissions in its IAM policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "EcrImageRetagCLI",
      "Effect": "Allow",
      "Action": ["ecr:BatchGetImage", "ecr:BatchDeleteImage", "ecr:PutImage"],
      "Resource": "*"
    }
  ]
}

To make it more secure, the wildcard for the Resource key above can be replaced with a complete ARN i.e. arn:aws:ecr:ap-southeast-1:AWS_ACCOUNT_ID:repository/ECR_REPO_NAME.

Release Process

1. Update version in the VERSION file
2. Run release.sh file
3. Create a release in GitHub web UI and upload the binaries from dist folder

Previous Releases

If you need to refer at specific version of this package, it's available here

Contribute

Feel free to fork and submit PRs for this project. I'm more than happy to review and merge it. If you have any questions regarding contributing, feel free to reach out to me on Twitter.