some docs

docker-compose.yml

@@ -1,7 +1,7 @@
 services:
   lean4game:
     build: .
-    privileged: true
+    privileged: true # needed to run bubblewrap inside docker
     environment:
       - LEAN4GAME_GITHUB_USER=${LEAN4GAME_GITHUB_USER}
       - LEAN4GAME_GITHUB_TOKEN=${LEAN4GAME_GITHUB_TOKEN}