feat: setup multi-arch build to additionally support linux/arm64

Author: GeorgeMac

.github/workflows/docker.yml

@@ -23,6 +23,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       # This action inspects the GitHub event metadata
       # and fills tags and labels (e.g. 'latest')
       # needed for the build step.
@@ -47,5 +50,6 @@ jobs:
         with:
           context: .
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}