code: async function start(service) {
    return new Promise((resolve) => {
      const snapshotsDir = path.join(__dirname, '../../test/services/', service.name, 'snapshots');
      const app = yakbak(service.defaultUrl, {
        dirname: snapshotsDir,
        hash: customHash
      });
      const proxy = http.createServer(app).listen(service.port, () => {
        console.log(`Yakbak server listening on port ${service.port}. Proxy for ${service.defaultUrl}`);
      });
  
      resolve(proxy);
    });
  }
docs: Starts a proxy server for the given service.
  @param {Service} service
  @returns {Promise|http.server} proxy server