Mastodon Social Network installation using Docker on Ubuntu 22.04 LTS is covered in a Howtoforge tutorial.

How to install Mastodon Social Network with Docker on Ubuntu 22.04 LTS

Mastodon is a free, decentralized, and open-source social network. It was created as an alternative to Twitter. Just like Twitter people can follow each other, and post messages, images, and videos. But unlike Twitter, there is no central store or authority for the content.

Instead, Mastodon operates across thousands of different servers each run by various members of the community. Users signed up on one server can easily connect to users on the other network and follow each other across instances.

How to install Mastodon Social Network with Docker on Ubuntu 22.04 LTS