Server Core container images
As part of the update, Microsoft has reduced the Server Core base container image by 30 percent from that of version 1709 and improved application compatibility. So for those who containerize existing applications, these small updates should make the process a bit more streamlined and efficient.
Curl, Tar, and SSH support
Windows Server version 1803 also includes support for Curl.exe, Tar.exe, and SSH tools. This is meant to complement PowerShell, especially when it comes to building and debugging scenarios.
Windows Subsystem for Linux
Windows Subsystem for Linux (WSL) has been updated to enable server administrators to use the tools and scripts available from Linux on Windows Server. Additional improvements such as Background tasks, DriveFS, and WSLPath are also included in the latest version of Windows Server.
Container networking enhancements
When it comes to container networking, Microsoft is trying to improve the experience by adding localhost and HTTP proxy support while simultaneously improving the scalability of containers and startup time.
Kubernetes features in Windows Server version 1803
With Windows Server version 1803, Microsoft is also working with the Kubernetes community to include more of the Kubernetes feature set and ecosystem in Windows Server. These additions include two additional storage plugins that enable persistent storage for Windows containers orchestrated by Kubernetes, cloud-scale networking features, and Windows platform support for Hyper-V isolated Pods.