如何在Terraform中链接ECS集群和ECS实例？

resource "aws_ecs_cluster" "my_cluster" {
  name = "my-cluster"
  region = "us-west-2"
  instance_type = "t2.micro"
}

resource "aws_ecs_instance" "my_instance" {
  cluster = aws_ecs_cluster.my_cluster.id
  ami = "ami-12345678"
  instance_type = "t2.micro"
}

resource "aws_ecs_cluster" "my_cluster" {
  name = "my-cluster"
  region = "us-west-2"
  instance_type = "t2.micro"

  instances = [
    aws_ecs_instance.my_instance.id
  ]
}