Docker installieren auf Ubuntu

https://phoenixnap.com/kb/install-docker-on-ubuntu-20-04 https://mindsers.blog/en/post/https-using-nginx-certbot-docker/ https://www.cyberciti.biz/faq/how-to-setup-mariadb-ssl-and-secure-connections-from-clients/ https://dba.stackexchange.com/questions/209142/is-it-impossible-to-force-mariadb-users-to-ssl