Adding public preview support

Author: austonli

articles/azure-monitor/containers/container-insights-overview.md

@@ -19,6 +19,9 @@ Container insights is a feature designed to monitor the performance of container
 
 Container insights supports clusters running the Linux and Windows Server 2019 operating system. The container runtimes it supports are Docker, Moby, and any CRI compatible runtime such as CRI-O and ContainerD.
 
+>[!NOTE]
+> Container insights support for Windows Server 2022 operating system in public preview.
+
 Monitoring your containers is critical, especially when you're running a production cluster, at scale, with multiple applications.
 
 Container insights gives you performance visibility by collecting memory and processor metrics from controllers, nodes, and containers that are available in Kubernetes through the Metrics API. After you enable monitoring from Kubernetes clusters, metrics and Container logs are automatically collected for you through a containerized version of the Log Analytics agent for Linux. Metrics are sent to the [metrics database in Azure Monitor](../essentials/data-platform-metrics.md), and log data is sent to your [Log Analytics workspace](../logs/log-analytics-workspace-overview.md).