old_contents: const express = require('express');
  const bodyParser = require('body-parser');
  const path = require('path');
  const childProcess = require('child_process');
  const StringDecoder = require('string_decoder').StringDecoder;
  const log = require('../util/log');
  const getDroplets = require('../api/get-droplets');
  const remoteSSH = require('../actions/remote-ssh');
  const remoteCopy = require('../actions/remote-copy');
  
  const app = express();
  const decoder = new StringDecoder('utf8');
  
  app.use(bodyParser.json());
  
  app.post('/git', function (req, res) {
      res.send('Thanks GitHub!');
  
      if(req.body.ref !== 'refs/heads/master'){
          return;
      }
  
      let options = {cwd: path.resolve(__dirname, '../stage/prime-calculator')};
      log('Received an update. Exciting times!');
      log('Executing git pull');
      let output = childProcess.execSync('git pull', options);
      display(output);
      log('Executing npm install');
      childProcess.execSync('npm install', options);
      log('Executing npm run build');
      childProcess.execSync('npm run build', options);
  
      getDroplets('lamp').then(droplets => droplets.forEach(droplet => {
          let ip = droplet.networks.v4.find(network => network.type === 'public').ip_address;
  
          log(`Stopping apache on ${ip}`);
          remoteSSH('service apache2 stop', ip, options);
  
          log(`Copying artifacts to ${ip}`);
          remoteCopy('./www/*', '/var/www/html/.', ip, options);
          remoteCopy('./api/', '/var/www/html/.', ip, options);
  
          log(`Starting apache on ${ip}`);
          remoteSSH('service apache2 start', ip, options);
      })).then(() => log('Done deploying'));
  
  });
  
  app.listen(8080, function () {
      console.log('Listening to git push events');
  });
  
  function display(output) {
      if (typeof  output === 'string') {
          console.log(output);
      } else {
          console.log(decoder.write(output));
      }
  }
  
new_contents: const express = require('express');
  const bodyParser = require('body-parser');
  const path = require('path');
  const childProcess = require('child_process');
  const StringDecoder = require('string_decoder').StringDecoder;
  const log = require('../util/log');
  const getDroplets = require('../api/get-droplets');
  const remoteSSH = require('../actions/remote-ssh');
  const remoteCopy = require('../actions/remote-copy');
  
  const app = express();
  const decoder = new StringDecoder('utf8');
  
  app.use(bodyParser.json());
  
  app.post('/git', function (req, res) {
      res.send('Thanks GitHub!');
  
      if(!req.body.ref.startsWith('refs/tags/') && req.body.ref !== 'refs/heads/master'){
          return;
      }
  
      let options = {cwd: path.resolve(__dirname, '../stage/prime-calculator')};
      log('Received an update. Exciting times!');
      log('Executing git pull');
      let output = childProcess.execSync('git pull', options);
      display(output);
      log('Executing npm install');
      childProcess.execSync('npm install', options);
      log('Executing npm run build');
      childProcess.execSync('npm run build', options);
  
      getDroplets('lamp').then(droplets => droplets.forEach(droplet => {
          let ip = droplet.networks.v4.find(network => network.type === 'public').ip_address;
  
          log(`Stopping apache on ${ip}`);
          remoteSSH('service apache2 stop', ip, options);
  
          log(`Copying artifacts to ${ip}`);
          remoteCopy('./www/*', '/var/www/html/.', ip, options);
          remoteCopy('./api/', '/var/www/html/.', ip, options);
  
          log(`Starting apache on ${ip}`);
          remoteSSH('service apache2 start', ip, options);
      })).then(() => log('Done deploying'));
  
  });
  
  app.listen(8080, function () {
      console.log('Listening to git push events');
  });
  
  function display(output) {
      if (typeof  output === 'string') {
          console.log(output);
      } else {
          console.log(decoder.write(output));
      }
  }
  
subject: fix deploy trigger