gitlab software package provides git powered software platform to collaborate on code, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gitlab
gitlab is installed in your system.
Make ensure the gitlab package were installed using the commands given below,
$ sudo dpkg-query -l | grep gitlab *
You will get with gitlab package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Ruby |
| Package | gitlab |
| Version | 8.12.3+dfsg1-1 |
| Description | git powered software platform to collaborate on code |
| Sub Section | Ruby |