👷 build docker for arm

Author: j1g5awi

.github/workflows/docker.yml

@@ -41,3 +41,4 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.metadata.outputs.tags }}
           labels: ${{ steps.metadata.outputs.labels }}
+          platforms: linux/amd64, linux/arm64, linux/arm