From e5cfa4a5a110928b4d17c8e98526681ebd11610a Mon Sep 17 00:00:00 2001
From: Van Thong Nguyen <tom@gridscale.io>
Date: Wed, 15 Mar 2023 17:01:52 +0100
Subject: [PATCH] update readme

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 9c8396b9..320c6c9b 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,12 @@ projects:
   url: https://api.gridscale.io
 ```
 
+Following environment variables can also be used instead of config file:
+- `GRIDSCALE_UUID` - corresponds to `userId`
+- `GRIDSCALE_TOKEN` - corresponds to `token`
+- `GRIDSCALE_URL` - corresponds to `url`
+**Note**: If the config file and the environment variables are used at the same time, the config file will be ignored and the environment variables will be used.
+
 ## Kubernetes
 
 You can use gscloud to retrieve the kubeconfig of your managed Kubernetes cluster via