nebula/modules/image/main.tf

variable "image" {
  description = "image to use"
}

data "docker_registry_image" "image" {
  name = var.image
}

resource "docker_image" "image" {
  name          = data.docker_registry_image.image.name
  pull_triggers = [data.docker_registry_image.image.sha256_digest]
}

output "image" {
  value = docker_image.image.latest
}