Provide separate healthcheck route

CloudronManifest.json

@@ -11,7 +11,7 @@
   ],
   "version": "0.4.2",
   "targetBoxVersion": "0.4.0",
-  "healthCheckPath": "/",
+  "healthCheckPath": "/api/healthcheck",
   "httpPort": 3000,
   "manifestVersion": 1,
   "website": "https://github.com/nebulade/surfer",

app.js

@@ -27,6 +27,7 @@ var multipart = multipart({ maxFieldsSize: 2 * 1024, limit: '512mb', timeout: 3
 router.get   ('/api/files/*', auth.ldap, files.get);
 router.put   ('/api/files/*', auth.ldap, multipart, files.put);
 router.delete('/api/files/*', auth.ldap, files.del);
+router.get   ('/api/healthcheck', function (req, res) { res.status(200).send(); });
 
 // welcome screen in case / does not serve up any file yet
 var appUrl = process.env.APP_ORIGIN ? process.env.APP_ORIGIN : 'http://localhost:3000';