🔧 Remove obsolete version attribute from docker-compose.yml

- Remove 'version: 3.8' as it's no longer needed in modern Docker Compose
- Eliminates warning: 'the attribute version is obsolete, it will be ignored'
- Follows current Docker Compose best practices

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   app:
     build: