diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index b358897..92f629a 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -52,11 +52,14 @@ jobs:
           fi
 
           echo "🚀 Deploying to $TARGET_COLOR container on port $TARGET_PORT..."
+          docker rm -f node-app-$TARGET_COLOR 2>/dev/null || true
+
           docker run -d \
             --name node-app-$TARGET_COLOR \
             --env-file /opt/app/.env \
             -p $TARGET_PORT:3000 \
             --network=commit-networks \
+            -v /opt/app/config/service-account-key.json:/app/config/service-account-key.json:ro \
             ${{ secrets.DOCKER_HUB_USERNAME }}/commit-api:latest
 
           echo "⏳ Health check for $TARGET_COLOR..."
diff --git a/docker-compose.yml b/docker-compose.yml
deleted file mode 100644
index 9c9468d..0000000
--- a/docker-compose.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-services:
-  nginx:
-    image: nginx:latest
-    container_name: nginx-proxy
-    ports:
-      - "80:80"
-      - "443:443"
-    volumes:
-      - /etc/letsencrypt:/etc/letsencrypt
-      - /opt/app/nginx/default.conf:/etc/nginx/conf.d/default.conf
-      - /opt/app/nginx/default-blue.conf:/etc/nginx/conf.d/default-blue.conf
-      - /opt/app/nginx/default-green.conf:/etc/nginx/conf.d/default-green.conf
-    restart: always
-    networks:
-      - commit-networks
-
-networks:
-  commit-networks:
-    driver: bridge
\ No newline at end of file
diff --git a/nginx/default-blue.conf b/nginx/default-blue.conf
deleted file mode 100644
index c450f3c..0000000
--- a/nginx/default-blue.conf
+++ /dev/null
@@ -1,17 +0,0 @@
-server {
-    listen 443 ssl;
-    server_name commit.n-e.kr www.commit.n-e.kr;
-
-    ssl_certificate /etc/letsencrypt/live/commit.n-e.kr/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/commit.n-e.kr/privkey.pem;
-    include /etc/letsencrypt/options-ssl-nginx.conf;
-    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
-
-    location / {
-        proxy_pass http://127.0.0.1:3000;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
-}
\ No newline at end of file
diff --git a/nginx/default-green.conf b/nginx/default-green.conf
deleted file mode 100644
index 03a9324..0000000
--- a/nginx/default-green.conf
+++ /dev/null
@@ -1,17 +0,0 @@
-server {
-    listen 443 ssl;
-    server_name commit.n-e.kr www.commit.n-e.kr;
-
-    ssl_certificate /etc/letsencrypt/live/commit.n-e.kr/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/commit.n-e.kr/privkey.pem;
-    include /etc/letsencrypt/options-ssl-nginx.conf;
-    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
-
-    location / {
-        proxy_pass http://127.0.0.1:3001;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
-}
\ No newline at end of file
diff --git a/nginx/default.conf b/nginx/default.conf
deleted file mode 100644
index e69de29..0000000