From 9da193b3c4d1171bf4f8287ff960fee1272c3fcc Mon Sep 17 00:00:00 2001
From: Franz Diebold <franz.diebold@tum.de>
Date: Sat, 4 Jul 2020 17:58:28 +0200
Subject: [PATCH] Add compatibility notice.

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 89edaba..a1cef3b 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 A [GitHub Action](https://github.com/features/actions) to expose useful environment variables.
 
+> This action is only supported on Linux! Currently, there is no support for Windows or macOS.
+
 ### Environment Variables exposed by **this Action**
 
 | Environment Variable Name | Description                                                                                                                           | Example value             |