Use gt repos (#2)

* feat: use GT repos as samples

* docs: typo

* run prepare.sh in container

* fix: fonts

* docs(prepare.sh): zips

* refactor: add more structure to execute_workflows.sh

* docs: change recommendations for starting the app

* Update README.md

Co-authored-by: Paul Pestov <10750176+paulpestov@users.noreply.github.com>

* Update README.md

Co-authored-by: Paul Pestov <10750176+paulpestov@users.noreply.github.com>

---------

Co-authored-by: Paul Pestov <10750176+paulpestov@users.noreply.github.com>