ECR Lifecycle Policies

gistfile1.txt

resource "aws_ecr_repository" "repo" {
  name = "mycompany"
}

resource "aws_ecr_lifecycle_policy" "expire_policy" {
  repository = aws_ecr_repository.repo.name

  policy = <<EOF
{
  "rules": [
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "imageCountMoreThan",
        "countNumber": 1,
        "tagStatus": "tagged",
        "tagPrefixList": [
          "latest"
        ]
      },
      "description": "Keep the latest image",
      "rulePriority": 10
    },
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "imageCountMoreThan",
        "countNumber": 7,
        "tagStatus": "tagged",
        "tagPrefixList": [
          "master",
          "main"
        ]
      },
      "description": "Keep a handful of images built from master or main",
      "rulePriority": 20
    },
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "imageCountMoreThan",
        "countNumber": 5,
        "tagStatus": "tagged",
        "tagPrefixList": [
          "prod-",
          "qa-",
          "staging-"
        ]
      },
      "description": "Keep enough images to rollback",
      "rulePriority": 30
    },
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "imageCountMoreThan",
        "countNumber": 1,
        "tagStatus": "tagged",
        "tagPrefixList": [
          "prod",
          "qa",
          "staging"
        ]
      },
      "description": "Keep currently running image",
      "rulePriority": 40
    },
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "sinceImagePushed",
        "countUnit": "days",
        "countNumber": 1,
        "tagStatus": "untagged"
      },
      "description": "Expire any untagged image",
      "rulePriority": 50
    },
    {
      "action": {
        "type": "expire"
      },
      "selection": {
        "countType": "imageCountMoreThan",
        "countNumber": 900,
        "tagStatus": "any"
      },
      "description": "Expire all other images in FIFO order",
      "rulePriority": 60
    }
  ]
}
EOF
}