Let's be super specific about the platform

it should be Ubuntu's default but just in case

Author: msanatan

.github/workflows/publish-docker.yml

@@ -39,6 +39,7 @@ jobs:
         with:
           context: .
           file: Server/Dockerfile
+          platforms: linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}