diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 2c990ed..79428f1 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -5,6 +5,12 @@ on:
     branches: [ "main" ]
   pull_request:
     branches: [ "main" ]
+  workflow_dispatch:
+    inputs:
+      extra_tag:
+        description: "Optionaler Zusatz-Tag (z.B. v1.2.3). Kommt zusätzlich zu :latest und :<sha>."
+        required: false
+        default: ""
 
 jobs:
   build-and-push:
@@ -42,4 +48,4 @@ jobs:
           context: .
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
\ No newline at end of file
+          labels: ${{ steps.meta.outputs.labels }}