diff --git a/.env.example b/.env.example
index 35141536..d8e29e02 100644
--- a/.env.example
+++ b/.env.example
@@ -6,7 +6,7 @@
 
 # PostgreSQL
 DB_PORT=5432
-DB_HOST=postgres
+DB_HOST=db
 DB_USER=
 DB_PASSWORD=
 DB_NAME=report_db
diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index 98303563..a83296c7 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -43,7 +43,7 @@ jobs:
       - name: Restart containers
         run: |
           cd "$DEPLOY_DIR"
-          docker compose up -d
+          docker compose up -d --remove-orphans
           # backend/frontend는 항상 새로 기동: DB 교체 시 스키마 재동기화,
           # nginx의 낡은 upstream IP 캐시 방지
           docker compose up -d --no-deps --force-recreate backend frontend
diff --git a/docker-compose.yml b/docker-compose.yml
index b6b3c5ef..944c422c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,5 @@
 services:
-  postgres:
+  db:
     image: postgres:16-alpine
     container_name: report-db
     restart: always
@@ -14,7 +14,7 @@ services:
     networks:
       - app-network
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-postgres} -d ${DB_NAME:-report_db}"]
+      test: [ "CMD-SHELL", "pg_isready -U ${DB_USER:-postgres} -d ${DB_NAME:-report_db}" ]
       interval: 5s
       timeout: 5s
       retries: 20
@@ -27,7 +27,7 @@ services:
     expose:
       - "3000"
     environment:
-      - DB_HOST=${DB_HOST:-postgres}
+      - DB_HOST=${DB_HOST:-db}
       - DB_PORT=${DB_PORT:-5432}
       - DB_USER=${DB_USER:-postgres}
       - DB_PASSWORD=${DB_PASSWORD:?DB_PASSWORD가 .env에 설정되어야 합니다}
@@ -38,7 +38,7 @@ services:
       - ADMIN_PASS=${ADMIN_PASS:?ADMIN_PASS가 .env에 설정되어야 합니다}
       - JEMINI_KEY=${JEMINI_KEY}
     depends_on:
-      postgres:
+      db:
         condition: service_healthy
     volumes:
       - ./backend/img:/app/img
@@ -63,4 +63,4 @@ networks:
     driver: bridge
   # npm(Nginx Proxy Manager)이 컨테이너 이름으로 라우팅하는 공용 네트워크
   proxy:
-    external: true
\ No newline at end of file
+    external: true