do not check for os updates on docker installations (#2856)

- closes #2849

Author: foxriver76

CHANGELOG.md

@@ -5,6 +5,7 @@
 -->
 
 ## __WORK IN PROGRESS__
+* (foxriver76) do not check for OS updates on Docker installations
 * (foxriver76) clear package update notification if no updates are present anymore
 * (Gaspode69) fixed restarting controller on Windows systems
 

packages/controller/src/main.ts

@@ -5714,6 +5714,10 @@ async function setInstanceOfflineStates(id: ioBroker.ObjectIDs.Instance): Promis
  * Check for updatable OS packages and register them as notification
  */
 async function listUpdatableOsPackages(): Promise<void> {
+    if (tools.isDocker()) {
+        return;
+    }
+
     const packManager = new PacketManager();
     await packManager.ready();