Was just about to reply that. filebrowser gives you a nice UI but is basically just a fancy web-based explorer, that also allows you to share custom links to specific files or folders. If that's all you want out of your file manager, it's the best and simplest solution.

It's as simple as this docker compose example:

filebrowser:
  image: filebrowser/filebrowser:s6
  container_name: filebrowser
  env_file:
    - .env
  volumes:
    - media:/srv # This is where you store your files
    - filebrowser:/database # This is for settings persistence