code: func loadZippedExeAssets() (ResourceMap, error) {
  	// open ourselves (teleport binary) for reading:
  	// NOTE: the file stays open to serve future Read() requests
  	myExe, err := osext.Executable()
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  	return readZipArchive(myExe)
  }
docs: // LoadWebResources returns a filesystem implementation compatible
  // with http.Serve.
  //
  // The "filesystem" is served from a zip file attached at the end of
  // the executable
  //