You have a collection of applications running on a Google Kubernetes Engine (GKE) cluster, and you are utilizing Cloud Kubernetes Engine Monitoring. Now, you're introducing a new containerized application, developed by a third party, into your production environment. This third-party application is unmodifiable and cannot be reconfigured. It logs its information to /var/log/app_messages.log, and your goal is to forward these log entries to Cloud Logging. What steps should you take to achieve this?