fixed expressjs shutdown taking a long time

docker-compose.yml

@@ -60,6 +60,7 @@ services:
       context: ./expressjs
 
     container_name: expressjs
+    stop_grace_period: 5s
 
     environment:
       - BASE_PATH=/manage

expressjs/src/server.js

@@ -334,7 +334,7 @@ async function cleanupExpired() {
   }
 }
 
-setInterval(() => {
+const cleanupTimer = setInterval(() => {
   cleanupExpired().catch(() => undefined);
 }, 60 * 1000);
 cleanupExpired().catch(() => undefined);
@@ -804,6 +804,23 @@ app.use((req, res) => {
   res.status(404).send(renderPage('Nicht gefunden', '<p class="card">Seite nicht gefunden.</p>'));
 });
 
-app.listen(port, () => {
+const server = app.listen(port, () => {
   console.log(`Express server listening on ${port} with base path ${basePath}`);
 });
+
+function shutdown(signal) {
+  clearInterval(cleanupTimer);
+  server.close(() => {
+    db.close(() => {
+      console.log(`Shutdown complete (${signal}).`);
+      process.exit(0);
+    });
+  });
+  setTimeout(() => {
+    console.error('Forced shutdown after timeout.');
+    process.exit(1);
+  }, 5000).unref();
+}
+
+process.on('SIGTERM', () => shutdown('SIGTERM'));
+process.on('SIGINT', () => shutdown('SIGINT'));