code: def _update_config_file(username, password, email, url, config_path):
          
          try:
              # read the existing config
              config = json.load(open(config_path, "r"))
          except ValueError:
              config = dict()
  
          if not config.get('auths'):
              config['auths'] = dict()
  
          if not config['auths'].get(url):
              config['auths'][url] = dict()
          encoded_credentials = dict(
              auth=base64.b64encode(username + b':' + password),
              email=email
          )
          config['auths'][url] = encoded_credentials
          try:
              json.dump(config, open(config_path, "w"), indent=5, sort_keys=True)
          except Exception as exc:
              raise exceptions.AnsibleContainerConductorException(
                  u"Failed to write registry config to {0} - {1}".format(config_path, exc)
              )
docs: Update the config file with the authorization.