diff --git a/.dockerignore b/.dockerignore
index 8399d2f..ad980b9 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -7,12 +7,16 @@ coverage
 # 깃 관련 파일
 .git
 .gitignore
+.github
 
 # 환경 변수
 .env
 .env.dev
+.env.local
+.env.*.local
 
 # 로그 파일
+*.log
 npm-debug.log
 yarn-error.log
 pnpm-debug.log
@@ -27,4 +31,19 @@ docker-compose.yml
 .dockerignore
 
 # 빌드에 필요 없는 파일
-README.md
\ No newline at end of file
+README.md
+*.md
+docs
+
+# 테스트/임시 파일
+tests
+__tests__
+*.test.ts
+*.spec.ts
+
+# IDE 설정
+.vscode
+.idea
+
+# Swagger 산출물 (컨테이너 빌드 시 재생성)
+swagger.json
diff --git a/.github/workflows/deploy-develop.yml b/.github/workflows/deploy-develop.yml
index 382094e..d9cde5e 100644
--- a/.github/workflows/deploy-develop.yml
+++ b/.github/workflows/deploy-develop.yml
@@ -2,7 +2,7 @@ name: deploy-dev
 
 on:
   push:
-    branches: [ develop ] 
+    branches: [ develop ]
   workflow_dispatch:
 
 jobs:
@@ -48,27 +48,22 @@ jobs:
           ${{ secrets.ENV_DEV_CONTENT }}
           EOF'
 
-      - name: Install, Generate & Build on server
-        run: |
-          ssh prod 'cd /opt/app-dev && pnpm install --frozen-lockfile && pnpm exec prisma generate && rm -rf dist && pnpm build'
-      
-      # 테스트 DB 마이그레이션
+      # 테스트 DB 마이그레이션 (npx로 prisma CLI 1회 호출 — EC2 build 단계 없이)
       - name: Run Prisma DB Push (Dev)
         run: |
           ssh prod << 'EOF'
           set -euo pipefail
           cd /opt/app-dev
-          # .env.dev 파일을 로드하여 실행
-          export $(cat .env.dev | xargs)
-          pnpm exec prisma db push
+          export $(grep -v '^#' .env.dev | xargs)
+          npx --yes -p prisma@^6 prisma db push
           EOF
 
-      # 도커 빌드 전 디스크 용량 확보
-      - name: Clean up unused Docker data on EC2
+      # 도커 빌드 전 디스크 정리 (7일 이상 미사용 데이터만 — BuildKit 캐시 보존)
+      - name: Prune stale Docker data on EC2
         run: |
-          ssh prod 'sudo docker system prune -af'
+          ssh prod 'sudo docker system prune -f --filter "until=168h" || true'
 
-      # app-dev 컨테이너만 재시작 (운영 컨테이너 app, caddy는 건드리지 않음)
+      # app-dev 컨테이너만 빌드/재시작 (install/generate/build는 Dockerfile 멀티스테이지로 통합)
       - name: Deploy Docker services (Dev)
         run: |
-          ssh prod 'cd /opt/app-dev && sudo docker compose -p promptplace -f docker-compose.yml up -d --build app-dev'
\ No newline at end of file
+          ssh prod 'cd /opt/app-dev && sudo docker compose -p promptplace -f docker-compose.yml up -d --build app-dev'
diff --git a/.github/workflows/deploy-main.yml b/.github/workflows/deploy-main.yml
index 289722d..2217942 100644
--- a/.github/workflows/deploy-main.yml
+++ b/.github/workflows/deploy-main.yml
@@ -6,7 +6,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  deploy: 
+  deploy:
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -53,23 +53,22 @@ jobs:
           ${{ secrets.ENV_CONTENT }}
           EOF'
 
-      - name: Install, Generate & Build on server
-        run: |
-          ssh prod 'cd /opt/app-backup && pnpm install --frozen-lockfile && pnpm exec prisma generate && rm -rf dist && pnpm build'
-
+      # Prisma 마이그레이션 (npx로 prisma CLI 1회 호출 — EC2 build 단계 없이)
       - name: Run Prisma migrations (deploy)
         if: steps.paths-filter.outputs.prisma == 'true'
         run: |
           ssh prod << 'EOF'
           set -euo pipefail
           cd /opt/app-backup
-          pnpm exec prisma migrate deploy
+          export $(grep -v '^#' .env | xargs)
+          npx --yes -p prisma@^6 prisma migrate deploy
           EOF
 
       - name: Stop and Remove old containers
         run: |
           ssh prod 'cd /opt/app-backup && sudo docker rm -f myapp || true && sudo docker rm -f caddy || true'
 
+      # Docker 빌드/배포 (install/generate/build는 Dockerfile 멀티스테이지로 통합)
       - name: Deploy Docker services
-        run: | 
-          ssh prod 'cd /opt/app-backup && sudo docker compose -p promptplace -f docker-compose.yml up -d --build app caddy'
\ No newline at end of file
+        run: |
+          ssh prod 'cd /opt/app-backup && sudo docker compose -p promptplace -f docker-compose.yml up -d --build app caddy'