Grunt - Express server definition

gistfile1.js

module.exports = function(grunt) {
  var path = require('path');
  
  grunt.initConfig({
    //...
    express : {
      options : {
        port : 80,
        hostname : '*',
        server : path.resolve(__dirname, 'server.js')
      },
      target : {}
    }
    //...
  });
  
  grunt.loadNpmTasks('grunt-express');
  
  grunt.registerTask('serve', ['express', 'express-keepalive']);
  
};