diff --git a/README.md b/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..7cd7de64a3587f8eb0ea73e99dcc6a63bf434dc8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+## Usage for test and deploy
+
+* You can set the CI/CD variable `COMPOSER_DOWNGRADE` to `1` for using the composer version 1. Default is composer version 2.
+* For authenticating with the Gitlab package repository, you have to set the variable `GITLAB_ACCESS_TOKEN`, which you have to create for the user who runs the pipeline.
\ No newline at end of file