Update docker-publish.yml

Author: louisjdmartin

.github/workflows/docker-publish.yml

@@ -11,6 +11,7 @@ on:
   push:
     branches: [ 'master', '*.*', '*.*.*' ]
     tags: [ '*.*', '*.*.*' ]
+  workflow_dispatch:
 
 env:
   # Use docker.io for Docker Hub if empty