build: media stored in volume

docker-compose.yml

@@ -23,6 +23,9 @@ services:
     environment:
       FRONTEND_URL: http://localhost:5173
       SPRING_PROFILES_ACTIVE: dev
+      MEDIA_DATA: /app/data/media
+    volumes:
+      - ${MEDIA_DATA}:/app/data/media
     ports:
       - "8080:8080"
     restart: unless-stopped