title: Register EC2 instance to ECS cluster without public ip
body: <p>I'm having hard times adding instances that are created in my VPC and on a private subnet(no internet gateway attached to it) to ECS cluster. </p>
  
  <p>Right now the only way I've managed to do this was by adding a public IP and have a NAT instance/gateway configured. </p>
  
  <p>How do you use ECS clusters with private subnets?</p>