How to effectively debug performance issues in a Dockerized Node.js application?

Docker is a complex puzzle where each piece must fit perfectly. So, do the steps below to debug your app effectively:

• Begin by inspecting your Docker setup - use Docker stats and logs to get an overview of container performance.
• For deeper insights, attach profiling tools like Node.js’s built-in profiler or community tools like `clinic.js` to your running containers. These tools are like x-rays, providing visibility into the inner workings of your application.
• Pay attention to CPU and memory usage, as these are often the first indicators of performance issues. If you notice memory leaks, use heap snapshots to identify and rectify them.
• Lastly, regularly updating Node.js and Docker images to their latest stable versions can also bring performance improvements, keeping your application running smoothly in its containerized world.