Publish nightly and release Docker images to public ECR

[arthurbdiniz]

Signed-off-by: Arthur Diniz arthurbdiniz@gmail.com

What this PR does / why we need it:

This PR adds the feature to push nightly and release Docker images to AWS public ECR.

Which issue this PR fixes: #2370

Special notes for your reviewer:

From the kong organization side, it's necessary to:

• Create an IAM programmatic user inside AWS. Saving ACCESS_KEY_ID and SECRET_ACCESS_KEY to GitHub secrets as AWS_ECR_ACCESS_KEY_ID and AWS_ECR_SECRET_ACCESS_KEY variables.
• Create a public ECR repository and add an alias to it.

The IAM user needs to have a policy attached with permissions to the registry and to the specific repository. For this you can follow the official AWS documentation.

Example of policy I have used:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AllowPush",
            "Effect": "Allow",
            "Action": [
                "ecr-public:BatchCheckLayerAvailability",
                "ecr-public:PutImage",
                "ecr-public:InitiateLayerUpload",
                "ecr-public:UploadLayerPart",
                "ecr-public:CompleteLayerUpload",
                "ecr-public:GetAuthorizationToken"
            ],
            "Resource": [
                "arn:aws:ecr-public::000000000000:repository/kubernetes-ingress-controller"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "ecr-public:GetAuthorizationToken",
                "sts:GetServiceBearerToken"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

PR Readiness Checklist:

To validate this PR I have tested it inside my own AWS account and DockerHub:

GitHub actions job

ECR

Docker Hub

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[CLAassistant]

All committers have signed the CLA.

[rainest]

Our team doesn't have the ability to create repos or provision keys/IAM users ourselves, but I've asked the team that manages our AWS infrastructure about this.

For my own reference, this is tracked internally as partner-engineering-team#93

[pvalkone]

Our team doesn't have the ability to create repos or provision keys/IAM users ourselves, but I've asked the team that manages our AWS infrastructure about this.

@rainest Any updates to share on this? I'm looking forward to having KIC images hosted on Public ECR.

[shaneutt]

Checkin in on this one?