Refactor Docker Compose configuration to improve service dependencies and remove unused network

- Removed the portal-network configuration and associated network settings from services.
- Added service health checks for database and cache dependencies in the backend service.
- Updated links for backend service to connect directly to database and cache services.

compose-plesk.yaml

@@ -8,8 +8,6 @@ services:
     container_name: portal-frontend
     ports:
       - "127.0.0.1:3000:3000"
-    networks:
-      - portal-network
     environment:
       - NODE_ENV=production
       - PORT=3000
@@ -30,8 +28,9 @@ services:
     container_name: portal-backend
     ports:
       - "127.0.0.1:4000:4000"
-    networks:
-      - portal-network
+    links:
+      - database
+      - cache
     environment:
       - NODE_ENV=production
       - PORT=4000
@@ -65,8 +64,10 @@ services:
       - /var/www/vhosts/asolutions.jp/httpdocs/secrets:/app/secrets:ro
     restart: unless-stopped
     depends_on:
-      - database
-      - cache
+      database:
+        condition: service_healthy
+      cache:
+        condition: service_healthy
     command: sh -c "pnpm prisma migrate deploy && node dist/main"
     healthcheck:
       test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:4000/health"]
@@ -78,8 +79,6 @@ services:
   database:
     image: postgres:17-alpine
     container_name: portal-database
-    networks:
-      - portal-network
     environment:
       - POSTGRES_DB=${POSTGRES_DB}
       - POSTGRES_USER=${POSTGRES_USER}
@@ -97,8 +96,6 @@ services:
   cache:
     image: redis:7-alpine
     container_name: portal-cache
-    networks:
-      - portal-network
     volumes:
       - redis_data:/data
     restart: unless-stopped
@@ -113,11 +110,3 @@ volumes:
     driver: local
   redis_data:
     driver: local
-
-networks:
-  portal-network:
-    driver: bridge
-    name: portal-network
-    enable_ipv6: false
-    driver_opts:
-      com.docker.network.enable_ipv6: "false"