Update publish_docker.yml

.github/workflows/publish_docker.yml

@@ -2,13 +2,8 @@ name: Publish Docker image
 
 on:
   push:
-    branches:
-      - "main"
     tags:
       - "v*.*.*"
-  pull_request:
-    branches:
-      - "main"
 
 jobs:
   push_to_registry: