👷 build both linux/amd64 and linux/arm64 Docker images

Author: techouse

.github/workflows/docker.yml

@@ -19,6 +19,10 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5
@@ -46,6 +50,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}