doodling with node.js <—> Docker REST socket

dockerApi.js

var http = require('http');

var SOCKET_PATH = '/var/run/docker.sock';

var dockerConn = {

  get: function(path, callback) {

    var options = {
      socketPath: SOCKET_PATH,
      path: path
    };

    http.get(options, function(res) {
      res.setEncoding('utf8');
      res.on('data', function(json) {
        var data = JSON.parse(json);
        var response = {
          'status_code': res.statusCode,
          'data': data
        };
        callback(null, response);
      });
    }).on('error', function(err) {
      callback(err, null);
    });

  },

  post: function(path, data, callback) {

    var jsonData = JSON.stringify(data);

    var headers = {
      'Content-Type': 'application/json',
      'Content-Length': jsonData.length
    };

    var options = {
      socketPath: SOCKET_PATH,
      path: path,
      method: 'POST',
      headers: headers
    };

    var req = http.request(options, function(res) {
      res.setEncoding('utf8');
      res.on('data', function(data) {
        var response = {
          'status_code': res.statusCode,
          'data': data
        };
        callback(null, response);
      });
    }).on('error', function(err) {
      callback(err, null);
    });

    req.write(jsonData);
    req.end();

  }

};

var dockerApi = {
  images: function(callback) {
    dockerConn.get('/images/json', callback);
  },
  containers: function(callback) {
    dockerConn.get('/containers/json', callback);
  },
  container: {
    create: function(data, callback) {
      dockerConn.post('/containers/create', data, callback);
    }
  }
};

dockerApi.images(function(err, data) {
  if (err) {
    console.log('Error getting images.');
    throw err;
  } else {
    console.log('IMAGES:');
    console.log(data);
  }
});
dockerApi.containers(function(err, data) {
  if (err) {
    console.log('Error getting containers.');
    throw err;
  } else {
    console.log('CONTAINERS:');
    console.log(data);
  }
});

var toCreate = {
  'Hostname': '',
  'User': '',
  'Memory': 0,
  'MemorySwap': 0,
  'AttachStdin': false,
  'AttachStdout': true,
  'AttachStderr': true,
  'PortSpecs': null,
  'Privileged':  false,
  'Tty': false,
  'OpenStdin': true,
  'StdinOnce': true,
  'Env': null,
  'Cmd': ['/bin/sh', '-c "while true; do echo hello world; sleep 1; done"'],
  'Dns': null,
  'Image': 'ubuntu',
  'Volumes': {},
  'VolumesFrom': '',
  'WorkingDir': ''
};
dockerApi.container.create(toCreate, function(err, data) {
  if (err) {
    console.log('Error creating container.');
    throw err;
  } else {
    console.log('RESULTS OF CONTAINER CREATION:');
    console.log(data);
  }
});