server.js

#!/usr/bin/env node
const prerender = require("prerender");
const cache = require('prerender-memory-cache');

//got from https://github.com/ball6847/docker-prerender who
// borrow from https://github.com/prerender/prerender/blob/master/server.js
const server = prerender({
  chromeLocation: "/usr/lib/chromium/chrome",
  chromeFlags: [
    "--headless",
    "--disable-gpu",
    "--remote-debugging-port=9222",
    "--hide-scrollbars",
    "--no-sandbox"
  ]
});

server.use(prerender.sendPrerenderHeader());
server.use(prerender.blockResources());
server.use(prerender.removeScriptTags());
server.use(prerender.httpHeaders());
server.use(cache);

server.start();