feat: Add PostgreSQL database layer for persistent storage

.env.example

@@ -6,6 +6,9 @@ REDIS_HOST=localhost
 REDIS_PORT=6379
 REDIS_PASSWORD=
 
+# Database
+DATABASE_URL=postgres://postgres:postgres@localhost:5432/smartdrop
+
 # Stellar Horizon
 STELLAR_HORIZON_URL=https://horizon.stellar.org
 

docker-compose.yml

@@ -0,0 +1,24 @@
+
+services:
+  postgres:
+    image: postgres:15-alpine
+    container_name: smartdrop_postgres
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: smartdrop
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    restart: unless-stopped
+
+  redis:
+    image: redis:7-alpine
+    container_name: smartdrop_redis
+    ports:
+      - "6379:6379"
+    restart: unless-stopped
+
+volumes:
+  postgres_data: