Update docker image workflow for arm support (#388)

.github/workflows/docker-image.yml

@@ -9,19 +9,27 @@ jobs:
   publish:
     name: Build and publish Docker image
     runs-on: ubuntu-latest
-    steps: 
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+
       - name: Log in to Docker Hub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-      
-      - name: Check out repository code
-        uses: actions/checkout@v3
- 
+
       - name: Build and publish image
         uses: docker/build-push-action@v3
         with:
+          platforms: linux/arm64,linux/amd64
           push: true
           tags: |
             ${{ secrets.DOCKER_USERNAME }}/rallly:latest