message: WCT uses webserver.hostname
diff: @@ -232,7 +232,8 @@ Expected to find a ${mdFilenames.join(' or ')} at: ${pathToLocalWct}/
  options.webserver._servers = servers.map((s) => {
  const port = s.server.address().port;
  - const url = `http://localhost:${port}${pathToGeneratedIndex}`;
  + const hostname = s.options.hostname;
  + const url = `http://${hostname}:${port}${pathToGeneratedIndex}`;
  return {url, variant: s.kind === 'mainline' ? '' : s.variantName};
  });
  