remove arm target and second tag for test build

see #59

Author: Kevin Buchholz

.github/workflows/testImageBuild.yml

@@ -20,8 +20,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           push: false
           tags: |
-            sourceboat/docker-laravel:test
-            ghcr.io/sourceboat/docker-laravel:test
+            sourceboat/docker-laravel:test