title: Pulling public images from Dockerhub in ECS Fargate
body: <p>When I configure my taskdefintion on my ECS Fargate cluster to pull nginx:latest it fails with </p>
  
  <pre><code>STOPPED (CannotPullContainerError: Error response from daemon)
  </code></pre>
  
  <p>I fail to understand what to put into the task definition field "image". </p>
  
  <p>It says there "repository-url/image:tag" but apparently it's not "nginx:latest" if I want to pull the public nginx image from dockerhub. What's the repository-url of dockerhub?</p>