Update docker-publish.yml

Author: chris-ch

.github/workflows/docker-publish.yml

@@ -9,11 +9,8 @@ on:
   schedule:
     - cron: '33 23 * * *'
   push:
-    branches: [ "main" ]
     # Publish server tags as releases.
     tags: [ 'v*.*.*' ]
-  pull_request:
-    branches: [ "main" ]
 
 env:
   # Use docker.io for Docker Hub if empty