main.tf

terraform {
  required_version = ">=1"
}

resource "aws_ecr_repository" "repo" {
  name = var.image_name
}

resource "aws_ecr_lifecycle_policy" "repo-policy" {
  repository = aws_ecr_repository.repo.name

  policy = <<EOF
{
  "rules": [
    {
      "rulePriority": 1,
      "description": "Keep image deployed with tag '${var.tag}''",
      "selection": {
        "tagStatus": "tagged",
        "tagPrefixList": ["${var.tag}"],
        "countType": "imageCountMoreThan",
        "countNumber": 1
      },
      "action": {
        "type": "expire"
      }
    },
    {
      "rulePriority": 2,
      "description": "Keep last 2 any images",
      "selection": {
        "tagStatus": "any",
        "countType": "imageCountMoreThan",
        "countNumber": 2
      },
      "action": {
        "type": "expire"
      }
    }
  ]
}
EOF

}