https://hub.docker.com/_/docker
https://github.com/docker-library/docker/blob/master/20.10/Dockerfile

2022
https://magnus.therning.org/2022-01-03-accessing-the-host-from-inside-a-docker-container.html
2021
https://itsecforu.ru/2021/12/14/%f0%9f%90%b3-%d0%ba%d0%b0%d0%ba-%d0%b8-%d0%b7%d0%b0%d1%87%d0%b5%d0%bc-%d0%b7%d0%b0%d0%bf%d1%83%d1%81%d0%ba%d0%b0%d1%82%d1%8c-docker-%d0%b2%d0%bd%d1%83%d1%82%d1%80%d0%b8-docker/
2013
https://www.docker.com/blog/docker-can-now-run-within-docker/