diff --git a/action.yml b/action.yml
index c07177a..dea944b 100644
--- a/action.yml
+++ b/action.yml
@@ -1,25 +1,30 @@
-name: 'Tag Build and Push Docker image'
-description: 'Tags verion in current repo, builds docker image and pushes it to registry'
-inputs:
-  registry:  # id of input
-    description: 'docker regisry host name'
-    required: true
-    default: 'gitea.phadric.de'
-  cache-registry:  # id of input
-    description: 'docker regisry host name'
-    required: true
-    default: 'imagecache.phadric.de'
-  image_name:
-    description: 'name of the dockerimage'
-    required: true
-    default: ${{ github.repository }}
-  token:
-    description: 'repo auth token'
-    required: true
 
-runs:
-  using: "composite"
-  steps:
+name: Docker Build
+
+on: 
+  workflow_call:
+    inputs:
+      registry:  # id of input
+        description: 'docker regisry host name'
+        required: true
+        default: 'gitea.phadric.de'
+      cache-registry:  # id of input
+        description: 'docker regisry host name'
+        required: true
+        default: 'imagecache.phadric.de'
+      image_name:
+        description: 'name of the dockerimage'
+        required: true
+        default: ${{ github.repository }}
+      token:
+        description: 'repo auth token'
+        required: true
+
+
+jobs:
+  build:
+    runs-on: slim
+    steps:
       - run: echo "::group::Checkout repository"
         if: ${{ always() }}
       - name: Checkout repository