AWS ECS Task実行時にエラー CannotPullContainerError

エラー内容

CannotPullContainerError: Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

解決策

タスク実行時にPublicIPを付与する

resource "aws_cloudwatch_event_target" "example_batch" {
  target_id = "example-batch"
  rule      = aws_cloudwatch_event_rule.example_batch.name
  role_arn  = module.ecs_events_role.iam_role_arn
  arn       = aws_ecs_cluster.example.arn

  ecs_target {
    launch_type         = "FARGATE"
    task_count          = 1
    platform_version    = "1.3.0"
    # ターゲットをarnで設定
    task_definition_arn = aws_ecs_task_definition.example_batch.arn

    network_configuration {
      assign_public_ip = "true" ★
      subnets          = [aws_subnet.public_subnet_1a.id]
    }
  }
}

private subnetで使いたいならNATゲートウェイを使う