add database container to docker-compose.yaml

docker-compose.yaml

@@ -12,3 +12,13 @@ services:
       - "12402:12402"
     volumes:
       - ./app:/app/app
+    env_file:
+      - db.env
+    depends_on:
+      - db
+
+  db:
+    restart: unless-stopped
+    image: postgres:17.2-alpine3.21
+    env_file:
+      - db.env