Install a ruby gem from a local repository

If your SDK project's gem was initialized by bundle gem command, the modern way for starting a gem, then the gem project would be configured so that the basic gem related tasks are available through the rake command of the project.

Namely, in my gem project I can execute

rake install:local

to build the gem being developed and install the artifact to local system.

In your local repository:

gem build yourlocalrepo.gemspec

This will create a .gem file. Now:

gem install yourlocalrepo.gem