diff --git a/.env.example b/.env.example
index b69b47b..63728b2 100644
--- a/.env.example
+++ b/.env.example
@@ -2,16 +2,16 @@
 DATABASE_URL="mysql://USER:PASSWORD@127.0.0.1:3306/chocomae"
 AUTH_SECRET="replace-with-local-secret"
 NEXTAUTH_SECRET="replace-with-local-secret"
-NEXTAUTH_URL="http://localhost:3001"
+NEXTAUTH_URL="http://localhost:3000"
 
 # Production example (.env.production)
 # DATABASE_URL="mysql://USER:PASSWORD@AWS_EC2_HOST:3306/chocomae"
 # AUTH_SECRET="replace-with-production-secret"
 # NEXTAUTH_SECRET="replace-with-production-secret"
-# NEXTAUTH_URL="http://NAS_HOST_OR_DOMAIN:3001"
+# NEXTAUTH_URL="http://NAS_HOST_OR_DOMAIN:3000"
 
 # Stage example (.env.stage)
 # DATABASE_URL="mysql://USER:PASSWORD@STAGE_DB_HOST:3306/chocomae"
 # AUTH_SECRET="replace-with-stage-secret"
 # NEXTAUTH_SECRET="replace-with-stage-secret"
-# NEXTAUTH_URL="http://STAGE_HOST_OR_DOMAIN:3001"
+# NEXTAUTH_URL="http://STAGE_HOST_OR_DOMAIN:3000"
diff --git a/docker-compose.stage.yml b/docker-compose.stage.yml
new file mode 100644
index 0000000..f49db2c
--- /dev/null
+++ b/docker-compose.stage.yml
@@ -0,0 +1,16 @@
+services:
+  chocoadmin:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: chocoadmin-stage:latest
+    container_name: stage-chocoadmin
+    ports:
+      - "3000:3000"
+    env_file:
+      - .env.stage
+    environment:
+      NODE_ENV: development
+      PORT: 3000
+      HOSTNAME: 0.0.0.0
+    restart: unless-stopped
diff --git a/docker-compose.yml b/docker-compose.yml
index e7e769f..b62e84e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     image: chocoadmin:latest
     container_name: chocoadmin
     ports:
-      - "3001:3000"
+      - "3000:3000"
     env_file:
       - ${ENV_FILE:-.env.production}
     environment:
diff --git a/docs/deployment.md b/docs/deployment.md
index b88c356..30ca84c 100644
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -8,7 +8,7 @@ Create `.env.production` on the production host. Do not commit it.
 DATABASE_URL="mysql://CHCOCO_ADMIN_USER:PASSWORD@AWS_EC2_HOST:3306/chocomae"
 AUTH_SECRET="replace-with-production-secret"
 NEXTAUTH_SECRET="replace-with-production-secret"
-NEXTAUTH_URL="http://NAS_HOST_OR_DOMAIN:3001"
+NEXTAUTH_URL="http://NAS_HOST_OR_DOMAIN:3000"
 ```
 
 Create `.env.stage` on the stage host with the same keys and stage-specific values.
@@ -21,7 +21,7 @@ Create `.env.stage` on the stage host with the same keys and stage-specific valu
 2. Place `.env.production` in the repository root on the NAS.
 3. In Container Manager, create a project from `docker-compose.yml`.
 4. Build and start the project.
-5. Open `http://NAS_HOST_OR_DOMAIN:3001/login`.
+5. Open `http://NAS_HOST_OR_DOMAIN:3000/login`.
 
 Equivalent CLI command:
 
diff --git a/docs/plan/project-plan-claudecode.md b/docs/plan/project-plan-claudecode.md
index 9e67cc9..b6e047a 100644
--- a/docs/plan/project-plan-claudecode.md
+++ b/docs/plan/project-plan-claudecode.md
@@ -96,7 +96,7 @@
 | 플랫폼 | Synology NAS (DS920+, 20GB RAM) - Docker |
 | DB (개발) | localhost MariaDB |
 | 실행 방법 | `docker compose up` |
-| 포트 | 3001 (기존 mouse-typing과 충돌 방지) |
+| 포트 | 3000 |
 
 ### 5-2. 서비스 환경
 
@@ -114,7 +114,7 @@ services:
   chocoadmin:
     build: .
     ports:
-      - "3001:3000"
+      - "3000:3000"
     environment:
       - NODE_ENV=development
       - DB_HOST=host.docker.internal
diff --git a/docs/plan/project-plan.md b/docs/plan/project-plan.md
index 96b94b5..d9e3ca8 100644
--- a/docs/plan/project-plan.md
+++ b/docs/plan/project-plan.md
@@ -58,7 +58,7 @@
 | 하드웨어 | 맥미니 |
 | IDE | IntelliJ IDEA |
 | 실행 방법 | IntelliJ 터미널에서 `pnpm dev` |
-| 포트 | 3001 (기존 mouse-typing과 충돌 방지) |
+| 포트 | 3000 |
 | DB (개발) | 맥미니 로컬 MariaDB (`localhost:3306`) |
 | 환경변수 | `.env.local` |
 
@@ -93,12 +93,12 @@ services:
   chocoadmin:
     build: .
     ports:
-      - "3001:3000"
+      - "3000:3000"
     environment:
       - NODE_ENV=production
       - DATABASE_URL=mysql://USER:PASS@AWS_EC2_HOST:3306/chocomae
       - NEXTAUTH_SECRET=...
-      - NEXTAUTH_URL=http://NAS_IP:3001
+      - NEXTAUTH_URL=http://NAS_IP:3000
     restart: unless-stopped
 ```
 
diff --git a/package.json b/package.json
index ecac5dc..51ccac8 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "packageManager": "pnpm@10.29.3",
   "scripts": {
-    "dev": "next dev --port 3001",
+    "dev": "next dev",
     "build": "next build",
     "start": "next start",
     "lint": "eslint",