diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # my_ros2_docker_image
 
 This template repository should give a good overview on how to build your own ROS2 development instance and produce a new hosted docker image out of it.
+For now the steps below are only suited for a existing Ubuntu installation. Windows is for now not supported in this repository.
 
 ## Install dependencies needed for working with docker images and tools to make your life easier
 Using the official Docker convenience installer script, we will install docker and docker compose: