docs: function initApiProxy() {
    if (build.verbose)
      console.log('Proxying paths...');
    lodash.forEach(build.proxyMap, function (proxyOpts, urlPath) {
      if (build.verbose)
        console.log('  - url: "' + urlPath + '"');
      app.use(urlPath, proxy(proxyOpts));
      // e.g. `app.use('/api', proxy({target: "http://localhost:4321/api", 
      // changeOrigin: true});`
    });
  }