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/dev/kustomization.yaml

@@ -14,7 +14,7 @@ commonLabels:
 # 이미지 태그 설정
 images:
   - name: ghcr.io/mayne0213/portfolio
-    newTag: develop-sha-latest
+    newTag: develop-sha-5e7b4de60bdc6f1c3fa1404119b3550b0740e6f5
 
 patchesStrategicMerge:
   - deployment-patch.yaml