fix: create arm docker image (#21)

* fix: create arm docker image

* fix: remove existing step

---------

Co-authored-by: Vibhor Dabas <vibhor.dabas@bcbgroup.io>

Author: dabasvibhor

.github/workflows/release.yaml

@@ -51,15 +51,25 @@ jobs:
     steps:
       - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
 
-      - name: Publish to DockerHub Registry
-        uses: elgohr/Publish-Docker-Github-Action@ec61b713af46c32efaa27ac2626c2acb82ce6435 # v5
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
         with:
-          name: flanksource/batch-runner
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-          snapshot: true
-          dockerfile: Dockerfile
-          tags: "latest,v${{ needs.semantic-release.outputs.release-version }}"
+
+      - name: Build and push multi-arch Docker image
+        run: |
+          docker buildx build \
+            --platform linux/amd64,linux/arm64 \
+            --tag flanksource/batch-runner:latest \
+            --tag flanksource/batch-runner:v${{ needs.semantic-release.outputs.release-version }} \
+            --push .
 
   helm:
     runs-on: ubuntu-latest