백엔드 서비스 설정 및 배포 구성 개선

- CORS 설정 업데이트 (모든 서비스)
- Swagger UI 경로 및 설정 수정
- Kubernetes 배포 설정 개선 (Ingress, Deployment)
- distribution-service SecurityConfig 및 Controller 개선
- IntelliJ 실행 프로파일 업데이트
- 컨테이너 이미지 빌드 문서화 (deployment/container/build-image.md)

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

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

distribution-service/src/main/java/com/kt/distribution/controller/DistributionController.java

@@ -26,7 +26,7 @@ import org.springframework.web.bind.annotation.*;
  */
 @Slf4j
 @RestController
-@RequestMapping("/api/v1/distribution")
+@RequestMapping
 @RequiredArgsConstructor
 @Tag(name = "Distribution", description = "다중 채널 배포 관리 API")
 public class DistributionController {

distribution-service/src/main/resources/application.yml

@@ -68,7 +68,7 @@ kafka:
 server:
   port: ${SERVER_PORT:8085}
   servlet:
-    context-path: /distribution
+    context-path: /api/v1/distribution
 
 # Resilience4j Configuration
 resilience4j:
@@ -136,6 +136,14 @@ springdoc:
     display-request-duration: true
   show-actuator: true
 
+# CORS Configuration
+cors:
+  allowed-origins: ${CORS_ALLOWED_ORIGINS:http://localhost:8081,http://localhost:8082,http://localhost:8083,http://localhost:8084,http://kt-event-marketing.20.214.196.128.nip.io}
+  allowed-methods: ${CORS_ALLOWED_METHODS:GET,POST,PUT,DELETE,OPTIONS,PATCH}
+  allowed-headers: ${CORS_ALLOWED_HEADERS:*}
+  allow-credentials: ${CORS_ALLOW_CREDENTIALS:true}
+  max-age: ${CORS_MAX_AGE:3600}
+
 # Logging
 logging:
   file: