title: Avoiding Port Conflicts in GRPC Server
body: <p>I am currently looking at GRPC for my real time needs.</p>
  <p>I noticed in the examples that we are explicitly required to bind to an hardcoded port in the Server.</p>
  <p>I hope to deploy the Server on a Stack like Heroku.</p>
  <p>Imagine I set the port to 9090 and that port is currently in use by another service won't that cause issues?</p>
  <p>I was expecting a dynamic port allocation as encouraged by <code>process.env.PORT</code></p>
  <p>Any insights would be greatly appreciated.</p>