diff --git a/.github/actions/prepare-docker/action.yaml b/.github/actions/prepare-docker/action.yaml
index c1e1e22..422215c 100644
--- a/.github/actions/prepare-docker/action.yaml
+++ b/.github/actions/prepare-docker/action.yaml
@@ -1,5 +1,12 @@
 name: Preparations for later docker usage
 description: prepares the access to docker.io and builds an image using createimage.sh
+inputs:
+  docker-user:
+    required: true
+    description: The user to be used for the docker login
+  docker-password:
+    required: true
+    description: The password to be used for the docker login
 
 runs:
   using: composite