Maratona Linux a tale of upgrading from Ubuntu 20.04 to 22.04

Maratona Linux is the development environment used since 2016 on the ``Maratona de Programação’', ICPC’s South American regional contest. It consists of Debian packages that modify a standard Ubuntu installation in order to make it suitable for the competition, installing IDEs, documentation, compilers, debuggers, interpreters, and enforcing network restrictions. The project, which began based on Ubuntu 16.04, has been successfully migrated from 20.04 to 22.04, the current Long-term Support (LTS) version. The project has also been improved by adding static analyzers, updating the package dependency map, splitting large packages, and enhancing the packaging pipeline.