Run ember-cli, including new, locally

I would like to run ember-cli, including new, locally.

If I run: npm install ember-cli

then in the same folder, according to this run:
./node_modules/.bin/ember build
This should work locally.

However, if I run /node_modules/.bin/ember new something, I get the following error:
You cannot use the new command inside an ember-cli project.

Any help would be greatly appreciated.