Redmine is a flexible project management web application. Written using
the Ruby on Rails framework, it is cross-platform and cross-database.

Redmine 7.0 requires Ruby 3.2 at minimum. Use rbenv to install an
appropriate Ruby version.

The installation directory can be changed by setting the DOCROOT
environment variable. "redmine"-directory will be created inside the
DOCROOT. REDMINE_USER and REDMINE_GROUP are used to set the owner of
the redmine directory and its contents.

Do "bundle update" after an installation or update to install the
dependencies for the used Ruby version and see the upgrading guide
for final steps:

https://www.redmine.org/projects/redmine/wiki/RedmineUpgrade