replace delay.js with timers/promises

src/cloudron.js

@@ -35,7 +35,6 @@ const apps = require('./apps.js'),
     constants = require('./constants.js'),
     cron = require('./cron.js'),
     debug = require('debug')('box:cloudron'),
-    delay = require('./delay.js'),
     dns = require('./dns.js'),
     dockerProxy = require('./dockerproxy.js'),
     eventlog = require('./eventlog.js'),
@@ -54,6 +53,7 @@ const apps = require('./apps.js'),
     shell = require('./shell.js'),
     sysinfo = require('./sysinfo.js'),
     tasks = require('./tasks.js'),
+    timers = require('timers/promises'),
     users = require('./users.js');
 
 const REBOOT_CMD = path.join(__dirname, 'scripts/reboot.sh');
@@ -85,7 +85,7 @@ async function onActivated(options) {
 
     // disable responding to api calls via IP to not leak domain info. this is carefully placed as the last item, so it buys
     // the UI some time to query the dashboard domain in the restore code path
-    await delay(30000);
+    await timers.setTimeout(30000);
     await reverseProxy.writeDefaultConfig({ activated :true });
 }