presence-button-web/server.js

const express = require("express");
const app = express();

// http://expressjs.com/en/starter/static-files.html
app.use(express.static("public"));

// http://expressjs.com/en/starter/basic-routing.html
app.get("/", function(request, response) {
  response.sendFile(__dirname + "/views/index.html");
});

// http://expressjs.com/en/starter/basic-routing.html
app.get("/img", function(request, response) {
  response.sendFile(__dirname + "/views/index.html");
});

const listener = app.listen(process.env.PORT, function() {
  console.log("Your app is listening on port " + listener.address().port);
});

process.on("SIGTERM", function () {
  console.log("SIGTERM received, sending SOS to Resurrect...");
  require('https').get("https://resurrect.glitch.me/"+process.env.PROJECT_DOMAIN+"", process.exit)
});