add postgres integration to save progress across devices

docker-compose.yml

@@ -0,0 +1,38 @@
+version: '3.8'
+
+services:
+  app:
+    build: .
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - DATABASE_URL=postgresql://mokuro:password@postgres:5432/mokuro
+      - HOSTNAME=0.0.0.0
+      - PORT=3000
+    depends_on:
+      - postgres
+    restart: unless-stopped
+    networks:
+      - mokuro-network
+
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      - POSTGRES_DB=mokuro
+      - POSTGRES_USER=mokuro
+      - POSTGRES_PASSWORD=password
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    restart: unless-stopped
+    networks:
+      - mokuro-network
+
+volumes:
+  postgres_data:
+
+networks:
+  mokuro-network:
+    driver: bridge