avoid to build the docker image whitin every pushes

Author: kalwalt

.github/workflows/build-docker.yml

@@ -2,9 +2,6 @@ name: Publish to DockerHub with a verstion-tag and latest-tag
 on:
   release:
     types: [ published ]
-  push:
-    branches:
-      - main
 jobs:
   update:
     runs-on: ubuntu-latest