Thanks for updating the documentation on this issue @fa-cruzfernandez !

I am unable to start localstack

localstack start
command not found: localstack
which localstack
localstack not found

Installed with following:-

pip install --user localstack

You probably need to add the pip PATH to environment variable. Something like:

export PATH="/Users/morhook/Library/Python/3.6/bin:$PATH"

(depends what is your python installed and/or pip)