TripleParity/docks-api

const express = require('express');
const request = require('request');
const router = new express.Router();

/* Proxy for docker socket */
router.all('*', function(req, res, next) {
  const requestOptions = {
    baseUrl: 'http://unix:/var/run/docker.sock:',
    url: req.url,
    method: req.method,
    body: JSON.stringify(req.body),
    headers: {
      // Docker API expects a host header to be present.
      'Host': '',

      // Content type needs to be passed along too
      'Content-Type': req.get('Content-Type'),
    },
  };

  request(requestOptions, (error, response, body) => {
    if (error) {
      res.status(500);
      res.write('Error while sending request to docker API: ' + error);
      console.error(error);
      return;
    }

    res.status(response.statusCode);

    // Append the headers that the docker API returned
    for (const key in response.headers) {
      if (response.headers.hasOwnProperty(key)) {
        res.append(key, response.headers[key]);
      }
    }

    res.write(body);
    res.end();
  });
});

module.exports = router;