Added step to clone tutorial repository

Author: akosma

docs/modules/ROOT/pages/index.adoc

@@ -51,6 +51,7 @@ The specified version numbers are the minimum required. Also, please make sure t
 
 Follow these three steps *before* starting the tutorial:
 
+. Clone the repository of the tutorial: `git clone git@github.com:projectsyn/commodore-component-tutorial.git` and `cd commodore-component-tutorial`.
 . Check all required tools by running the `./0_requirements.sh` script.
 . In GitHub, fork the https://github.com/projectsyn/commodore-defaults[commodore-defaults] project to your own personal account.
 . And in GitLab, create a https://gitlab.com/profile/personal_access_tokens[Personal Access Token] with API access.