Can't find gitlab-ee

How to Use GitLab
1

Can’t find gitlab-ee during installation, when you type the command

sudo EXTERNAL_URL=“http://gitlab.example.com” apt-get install gitlab-ee

http://i.prntscr.com/iWepTYMwTrC_GUhY7oFzkw.png

http://i.prntscr.com/jzFVh7MoRXaTscDhlXgyWg.png

How can I solve this problem?

2

just for certainty, can you show the contents of the gitlab_gitlab-ee.list file?