https://habrahabr.ru/post/335960/
https://habrahabr.ru/post/337896/
docker run -it ubuntu bash apt-get update apt-get install wget wget https://github.com/vaniacer/piu-piu-SH/raw/master/piu-piu chmod +x piu-piu ./piu-piu
That said, it's nicely commented.
https://github.com/zenoamaro/arkanoid.sh
The 'sh' is only a hint about the language (shell).
https://habrahabr.ru/post/335960/
https://habrahabr.ru/post/337896/