How to correctly format a greengrass recipe for using a Private ECR Image - specifying the digest

The example greengrass recipe is attached:

{
  "RecipeFormatVersion": "2020-01-25",
  "ComponentName": "com.example.MyPrivateDockerComponent",
  "ComponentVersion": "1.0.0",
  "ComponentDescription": "A component that runs a Docker container from a private Amazon ECR image.",
  "ComponentPublisher": "Amazon",
  "ComponentDependencies": {
    "aws.greengrass.DockerApplicationManager": {
      "VersionRequirement": "~2.0.0"
    },
    "aws.greengrass.TokenExchangeService": {
      "VersionRequirement": "~2.0.0"
    }
  },
  "Manifests": [
    {
      "Platform": {
        "os": "all"
      },
      "Lifecycle": {
        "run": "docker run account-id.dkr.ecr.region.amazonaws.com/repository[:tag|@digest]"
      },
      "Artifacts": [
        {
          "URI": "docker:account-id.dkr.ecr.region.amazonaws.com/repository[:tag|@digest]"
        }
      ]
    }
  ]
}

How exactly is the "[:tag|@digest]" formatted?

Do I just include the tag and leave the digest blank and it is implied?

A full example would be helpful.