I've created new grails plugin with this quick start reference.
How could I install it to local and remote repository to make it available for other plugins to depend on.
Thanks.
If you are creating a grails "plugin", you should be referring to this information instead. The one you are referring is for creating a Grails Application.
Gist:
Grails app (one you are referring to) creates a deployable component which can be deploed to any container and accessed. On the other hand, grails plugins are extension/modules that are created and maintained separately. packaged as zip and are plugged to any Grails Application when required.
If you are creating a grails plugin and want to push it to local/remote repositories, you need to use the release plugin which comes inside a plugin by default.
grails maven-install
The command is taken from release plugin to push your plugin to local maven repositories, if you have any.