ubuntu@ip-10-0-2-159:~$ curl -s https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | sudo bash
sudo: unable to resolve host ip-10-0-2-159
Detected operating system as Ubuntu/xenial.
Checking for curl…
Detected curl…
Running apt-get update… done.
Installing apt-transport-https… done.
Installing /etc/apt/sources.list.d/gitlab_gitlab-ce.list…done.
Importing packagecloud gpg key… done.
Running apt-get update… done.

The repository is setup! You can now install packages.
ubuntu@ip-10-0-2-159:~$ cat /etc/apt/sources.list.d/gitlab_gitlab-ce.list

this file was generated by packages.gitlab.com for

the repository at https://packages.gitlab.com/gitlab/gitlab-ce

deb https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/ xenial main
deb-src https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/ xenial main
ubuntu@ip-10-0-2-159:~$ sudo apt-get install gitlab-ce=7.10.5~omnibus-1
sudo: unable to resolve host ip-10-0-2-159
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Version ‘7.10.5~omnibus-1’ for ‘gitlab-ce’ was not found

Followed the installation document : https://packages.gitlab.com/gitlab/gitlab-ce/packages/ubuntu/trusty/gitlab-ce_7.10.5~omnibus-1_amd64.deb

Please help…