docker run -it --rm ubuntu:22.04 bash
apt update; apt install -y osc
osc help

apt install -y software-properties-common

# uncomment /etc/apt/sources.list.d/mozillateam-ubuntu-ppa-jammy.list 的 deb-src 項目

osc checkout home:matlinuxer2

apt install -y dpkg-dev
apt source firefox

osc rebuild # trigger package rebuild