Raise alert for when an app cannot be autoupdated

src/apps.js

@@ -162,6 +162,7 @@ const appstore = require('./appstore.js'),
     mail = require('./mail.js'),
     manifestFormat = require('cloudron-manifestformat'),
     mounts = require('./mounts.js'),
+    notifications = require('./notifications.js'),
     once = require('./once.js'),
     os = require('os'),
     path = require('path'),
@@ -2559,6 +2560,7 @@ async function autoupdateApps(updateInfo, auditSource) { // updateInfo is { appI
 
         if (!canAutoupdateApp(app, updateInfo[appId])) {
             debug(`app ${app.fqdn} requires manual update`);
+            notifications.alert(notifications.ALERT_MANUAL_APP_UPDATE, `${app.manifest.title} at ${app.fqdn} requires manual update to version ${updateInfo[appId].manifest.version}`, `Changelog:\n${updateInfo[appId].manifest.changelog}\n`);
             continue;
         }