test "Docker image" CI workflow on docker-arm64 branch [drop]

Author: derhuerst

.github/workflows/docker.yml

@@ -2,7 +2,10 @@ name: Docker image
 
 on:
   push:
-    branches: [ master ]
+    branches:
+      - master
+      # todo: revert
+      - docker-arm64
   release:
     types: [ prereleased, released ]
 
@@ -133,7 +136,8 @@ jobs:
           file: ./Dockerfile
           build-args: |
             VERSION_TAG=${{ steps.prep.outputs.version }}
-          push: true
+          # todo: revert
+          push: false
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.prep.outputs.tags }}
           labels: |