fixed yml file

.github/workflows/publish-docker.yml

@@ -24,7 +24,7 @@ jobs:
         uses: crazy-max/ghaction-docker-meta@v2
         with:
             #list of images to use as base name for tags
-            images: |
+            images: 
                 nusak/netmaker
             # generate Docker tags based on following events/attributes
                 tags: |