PERF(docker): optimize for arm64 only

- Optimize for arm64 only
- Remove multi-platform build

.github/workflows/build.yml

@@ -61,7 +61,7 @@ jobs:
           context: ./services/nextjs
           file: ./deploy/docker/Dockerfile.prod
           push: true
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha

deploy/k8s/overlays/prod/kustomization.yaml

@@ -13,7 +13,7 @@ commonLabels:
 # 이미지 태그 설정
 images:
   - name: ghcr.io/mayne0213/todo
-    newTag: main-sha-5a440587b5f70b23446c423ca74cfe1574037983
+    newTag: main-sha-a7d7b29486e273e8e0c3d39ad9247703b70e9234
 
 patchesStrategicMerge:
   - deployment-patch.yaml