Pushing a Helm chart to a public repository

To push a Helm chart to an Amazon ECR public repository

1. Install Helm version 3.8.0 or higher of the Helm client. These steps were written using Helm version 3.8.0. For more information, see Installing Helm.

2. Use the following steps to create a test Helm chart. For more information, see Helm Docs - Getting Started.

   1. Create a Helm chart named helm-test-chart and clear the contents of the templates directory.

      helm create helm-test-chart
      rm -rf ./helm-test-chart/templates/*

   2. Create a ConfigMap in the templates folder.

      cd helm-test-chart/templates
      cat <<EOF > configmap.yaml
      apiVersion: v1
      kind: ConfigMap
      metadata:
        name: helm-test-chart-configmap
      data:
        myvalue: "Hello World"
      EOF

3. Package the chart. The output will contain the filename of the packaged chart which you use when pushing the Helm chart.

   cd ..
   helm package helm-test-chart

   Output

   Successfully packaged chart and saved it to: /Users/username/helm-test-chart-0.1.0.tgz

4. Create a public repository to store your Helm chart. For more information, see Creating a public repository.

   aws ecr-public create-repository \
        --repository-name helm-test-chart \
        --region us-east-1

5. Authenticate your Helm client to the Amazon ECR public registry to which you intend to push your Helm chart. Authentication tokens are valid for 12 hours. For more information, see Registry authentication.

   aws ecr-public get-login-password \
        --region us-east-1 | helm registry login \
        --username AWS \
        --password-stdin public.ecr.aws

6. Push the Helm chart using the helm push command. The output should include the Amazon ECR repository URI and SHA digest.

   helm push helm-test-chart-0.1.0.tgz oci://public.ecr.aws/registry_alias

7. Describe your Helm chart.

   aws ecr-public describe-images \
        --repository-name helm-test-chart \
        --region us-east-1

   {
       "imageDetails": [
           {
               "registryId": "aws_account_id",
               "repositoryName": "helm-test-chart",
               "imageDigest": "sha256:f23ab9dc0fda33175e465bd694a5f4cade93eaf62715fa9390d9fEXAMPLE",
               "imageTags": [
                   "0.1.0"
               ],
               "imageSizeInBytes": 1636,
               "imagePushedAt": "2022-06-01T12:17:39-05:00",
               "imageManifestMediaType": "application/vnd.oci.image.manifest.v1+json"
           }
       ]
   }