Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/jellyfin/commits/commit/068368df6352cfad4e69df599c364b3f05b367ba/deployment/ubuntu-package-armhf/clean.sh
You should set ROOT_URL correctly, otherwise the web may not work correctly.
1. Update README.md to remove some old info
2. Remove common.build.sh from all the build scripts
3. Remove common.build.sh script
4. Remove the docker folder as this isn't used at all