title: Amazon Internal DNS Not Working Inside ECS Docker Containers
body: <p>I have containers running via a service in ECS that start up every day. Today, they can't access resources because DNS is failing to resolve names (specifically, an AWS internal DNS entry).</p>
  <p>The docker host can resolve the name without issue. DNS settings in /etc/resolve.conf are the same in both the host and the container itself. I've tried running the container in both bridged and host network mode and neither worked (especially weird for host, given they are supposed to share a network stack which I would think would include DNS services).</p>
  <p>Normally, I would think something is wrong with the DNS server configuration or DNS entry configuration but I don't have control over either or those things in this case (since the entry in question belongs to AWS).</p>
  <p>Any ideas on how to fix this?</p>