diff --git a/compose-plesk-fallback.yaml b/compose-plesk-fallback.yaml
new file mode 100644
index 00000000..a2691138
--- /dev/null
+++ b/compose-plesk-fallback.yaml
@@ -0,0 +1,114 @@
+# 🚀 Customer Portal - Plesk Docker Stack (Fallback - Default Bridge)
+# Deploy via: Plesk → Docker → Stacks → Add Stack
+# Project name: customer-portal
+
+services:
+  frontend:
+    image: portal-frontend:latest
+    container_name: portal-frontend
+    ports:
+      - "127.0.0.1:3000:3000"
+    environment:
+      - NODE_ENV=production
+      - PORT=3000
+      - HOSTNAME=0.0.0.0
+      - NEXT_PUBLIC_API_BASE=${NEXT_PUBLIC_API_BASE}
+      - NEXT_PUBLIC_APP_NAME=${NEXT_PUBLIC_APP_NAME}
+      - NEXT_PUBLIC_APP_VERSION=${NEXT_PUBLIC_APP_VERSION}
+    restart: unless-stopped
+    depends_on:
+      - backend
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3000/api/health"]
+      interval: 30s
+      timeout: 10s
+      start_period: 40s
+      retries: 3
+
+  backend:
+    image: portal-backend:latest
+    container_name: portal-backend
+    ports:
+      - "127.0.0.1:4000:4000"
+    environment:
+      - NODE_ENV=production
+      - PORT=4000
+      - DATABASE_URL=${DATABASE_URL}
+      - REDIS_URL=${REDIS_URL}
+      - JWT_SECRET=${JWT_SECRET}
+      - JWT_EXPIRES_IN=${JWT_EXPIRES_IN}
+      - BCRYPT_ROUNDS=${BCRYPT_ROUNDS}
+      - CORS_ORIGIN=${CORS_ORIGIN}
+      - TRUST_PROXY=${TRUST_PROXY}
+      - WHMCS_BASE_URL=${WHMCS_BASE_URL}
+      - WHMCS_API_IDENTIFIER=${WHMCS_API_IDENTIFIER}
+      - WHMCS_API_SECRET=${WHMCS_API_SECRET}
+      - SF_LOGIN_URL=${SF_LOGIN_URL}
+      - SF_CLIENT_ID=${SF_CLIENT_ID}
+      - SF_PRIVATE_KEY_PATH=${SF_PRIVATE_KEY_PATH}
+      - SF_USERNAME=${SF_USERNAME}
+      - PORTAL_PRICEBOOK_ID=${PORTAL_PRICEBOOK_ID}
+      - LOG_LEVEL=${LOG_LEVEL}
+      - LOG_FORMAT=${LOG_FORMAT}
+      - SENDGRID_API_KEY=${SENDGRID_API_KEY}
+      - EMAIL_FROM=${EMAIL_FROM}
+      - EMAIL_FROM_NAME=${EMAIL_FROM_NAME}
+      - EMAIL_ENABLED=${EMAIL_ENABLED}
+      - EMAIL_USE_QUEUE=${EMAIL_USE_QUEUE}
+      - SENDGRID_SANDBOX=${SENDGRID_SANDBOX}
+      - EMAIL_TEMPLATE_RESET=${EMAIL_TEMPLATE_RESET}
+      - EMAIL_TEMPLATE_WELCOME=${EMAIL_TEMPLATE_WELCOME}
+      - NODE_OPTIONS=${NODE_OPTIONS}
+    volumes:
+      - /var/www/vhosts/asolutions.jp/httpdocs/secrets:/app/secrets:ro
+    restart: unless-stopped
+    depends_on:
+      database:
+        condition: service_healthy
+      cache:
+        condition: service_healthy
+    links:
+      - database
+      - cache
+    command: sh -c "pnpm prisma migrate deploy && node dist/main"
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:4000/health"]
+      interval: 30s
+      timeout: 10s
+      start_period: 60s
+      retries: 3
+
+  database:
+    image: postgres:17-alpine
+    container_name: portal-database
+    environment:
+      - POSTGRES_DB=${POSTGRES_DB}
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - POSTGRES_INITDB_ARGS=--encoding=UTF-8 --lc-collate=C --lc-ctype=C
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U portal -d portal_prod"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  cache:
+    image: redis:7-alpine
+    container_name: portal-cache
+    volumes:
+      - redis_data:/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  postgres_data:
+    driver: local
+  redis_data:
+    driver: local
diff --git a/compose-plesk.yaml b/compose-plesk.yaml
index 706d3ab9..5ee418da 100644
--- a/compose-plesk.yaml
+++ b/compose-plesk.yaml
@@ -118,3 +118,6 @@ networks:
   portal-network:
     driver: bridge
     name: portal-network
+    enable_ipv6: false
+    driver_opts:
+      com.docker.network.enable_ipv6: "false"