Migrate architecture to PostgreSQL for Swarm HA

docker-compose.yml

@@ -1,23 +1,37 @@
 version: '3.8'
 
 services:
-  inventory-app:
-    image: inventory-app:latest
-    container_name: portal-inventory
-    ports:
-      - "3000:3000"
+  postgres-db:
+    image: postgres:15-alpine
     environment:
-      - NODE_ENV=production
-      - DATABASE_URL=file:/app/dev.db
-      - SESSION_SECRET=ganti_dengan_rahasia_acak_anda
+      - POSTGRES_USER=inventory_user
+      - POSTGRES_PASSWORD=sandi_rahasia_db_123
+      - POSTGRES_DB=inventory_db
     volumes:
-      # PENTING: Ganti '/opt/inventory' dengan lokasi folder Anda di VPS Node Manager
-      - /opt/inventory/dev.db:/app/dev.db
+      # PENTING: Lokasi folder data PostgreSQL di Node Manager
+      - /opt/inventory/pgdata:/var/lib/postgresql/data
     deploy:
       mode: replicated
       replicas: 1
       placement:
         constraints:
+          # Database tetap dikunci di Node Manager agar file data tidak hilang
           - node.role == manager
       restart_policy:
         condition: on-failure
+
+  inventory-app:
+    image: inventory-app:latest
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - DATABASE_URL=postgresql://inventory_user:sandi_rahasia_db_123@postgres-db:5432/inventory_db?schema=public
+      - SESSION_SECRET=ganti_dengan_rahasia_acak_anda
+    deploy:
+      mode: replicated
+      replicas: 2 # Aplikasi kini bisa disebar ke beberapa server!
+      restart_policy:
+        condition: on-failure
+    depends_on:
+      - postgres-db