GitHub Actions CI/CD 파이프라인 구축 완료

- GitHub Actions 전용 Kustomize 매니페스트 구조 생성
- 환경별(dev/staging/prod) Overlay 및 Patch 파일 작성
- SonarQube 코드 품질 분석 통합
- Docker 이미지 빌드 및 Azure Container Registry 푸시
- Kubernetes 자동 배포 워크플로우 구성
- 수동 배포 스크립트 및 구축 가이드 문서 추가

주요 기능:
- 자동 배포: Push/PR 시 dev 환경 자동 배포
- 수동 배포: 환경 선택 가능한 워크플로우 트리거
- 환경별 최적화: dev(1 replica), staging(2 replicas), prod(3 replicas)
- 보안 설정: staging/prod HTTPS, JWT 토큰 유효시간 조정
- 롤백 지원: GitHub Actions, kubectl, 수동 스크립트

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

deployment/cicd/kustomize/base/common/cm-common.yaml

@@ -1,12 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: cm-common
-  
-data:
-  CORS_ALLOWED_ORIGINS: "http://localhost:8081,http://localhost:8082,http://localhost:8083,http://localhost:8084,http://phonebill.20.214.196.128.nip.io"
-  JWT_ACCESS_TOKEN_VALIDITY: "18000000"
-  JWT_REFRESH_TOKEN_VALIDITY: "86400000"
-  REDIS_PORT: "6379"
-  SPRING_PROFILES_ACTIVE: "dev"
-  DDL_AUTO: "update"

deployment/cicd/kustomize/base/common/ingress.yaml

@@ -1,49 +0,0 @@
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: phonebill
-  
-  annotations:
-    kubernetes.io/ingress.class: nginx
-    nginx.ingress.kubernetes.io/ssl-redirect: "false"
-spec:
-  ingressClassName: nginx
-  rules:
-  - host: phonebill-api.20.214.196.128.nip.io
-    http:
-      paths:
-      - path: /api/v1/auth
-        pathType: Prefix
-        backend:
-          service:
-            name: user-service
-            port:
-              number: 80
-      - path: /api/v1/users
-        pathType: Prefix
-        backend:
-          service:
-            name: user-service
-            port:
-              number: 80
-      - path: /api/v1/bills
-        pathType: Prefix
-        backend:
-          service:
-            name: bill-service
-            port:
-              number: 80
-      - path: /api/v1/products
-        pathType: Prefix
-        backend:
-          service:
-            name: product-service
-            port:
-              number: 80
-      - path: /api/v1/kos
-        pathType: Prefix
-        backend:
-          service:
-            name: kos-mock
-            port:
-              number: 80

deployment/cicd/kustomize/base/common/secret-common.yaml

@@ -1,10 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: secret-common
-  
-type: Opaque
-stringData:
-  JWT_SECRET: "nwe5Yo9qaJ6FBD/Thl2/j6/SFAfNwUorAY1ZcWO2KI7uA4bmVLOCPxE9hYuUpRCOkgV2UF2DdHXtqHi3+BU/ecbz2zpHyf/720h48UbA3XOMYOX1sdM+dQ=="
-  REDIS_HOST: "redis-cache-dev-master"
-  REDIS_PASSWORD: "Redis2025Dev!"

deployment/cicd/kustomize/base/common/secret-imagepull.yaml

@@ -1,17 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: phonebill
-  
-type: kubernetes.io/dockerconfigjson
-stringData:
-  .dockerconfigjson: |
-    {
-      "auths": {
-        "acrdigitalgarage01.azurecr.io": {
-          "username": "acrdigitalgarage01",
-          "password": "+OY+rmOagorjWvQe/tTk6oqvnZI8SmNbY/Y2o5EDcY+ACRDCDbYk",
-          "auth": "YWNyZGlnaXRhbGdhcmFnZTAxOitPWStybU9hZ29yald2UWUvdFRrNm9xdm5aSThTbU5iWS9ZMm81RURjWStBQ1JEQ0RiWWs="
-        }
-      }
-    }