如何在gcp terraform脚本中提供图像名称？

provider "google" {
  credentials = file("<path_to_service_account_key_file>")
  project     = "<project_id>"
  region      = "<region>"
}

resource "google_compute_image" "my_image" {
  name         = "my-image"
  source_image = "<source_image>"
}

resource "google_compute_instance" "my_instance" {
  name         = "my-instance"
  machine_type = "<machine_type>"
  zone         = "<zone>"
  
  boot_disk {
    initialize_params {
      image = google_compute_image.my_image.self_link
    }
  }
}