jlesage/docker-jdownloader-2 ? reverse-engineered prompt

Build me a lightweight Docker container for JDownloader 2 that I can run on my own server and open from a browser. I want the app to be accessible through a web based desktop, with the option to connect by VNC too, and I want basic conveniences like clipboard sharing, audio, a file manager, terminal access, and desktop notifications if they fit naturally.

Please make it easy to start with a simple docker run example, using one folder for config and another for downloaded files so everything stays persistent. It should support common settings like user and group IDs, timezone, language, and volume permissions, and it should be safe and straightforward for home use. If there are sensible defaults or setup steps for web access, ports, or authentication, include those too.

If you need current details from JDownloader or Docker docs to get the setup right, look them up online and wire it together cleanly.