feat(server); allow debugging

website/server/index.js

@@ -28,6 +28,10 @@ if (CORES !== 0 && cluster.isMaster && (IS_DEV || IS_PROD)) {
   // Fork workers. If config.json has WEB_CONCURRENCY=x,
   // use that - otherwise, use all cpus-1 (production)
   for (let i = 0; i < CORES; i += 1) {
+    cluster.setupMaster({
+      exec: process.argv[1],
+      args: ['--perf-basic-prof'],
+    });
     cluster.fork();
   }