Installation on debian

Hi,

I’m trying to install gitlab on debian with the debian package found there:
https://people.debian.org/~praveen/gitlab/

but installation is blocked here:

[...]
Setting up gitlab (8.11.3+dfsg1-2) ...
Creating/updating gitlab user account...
Creating runtime directories for gitlab...
Updating file permissions...
GITLAB_HOST=localhost 
Configuring nginx with HTTPS...
GITLAB_HTTPS=true
Configuring letsencrypt...
Requested domain is not a FQDN
letsencrypt auto configuration failed...
Stop your webserver and try running letsencrypt manually...
letsencrypt -d localhost certonly
Registering /etc/gitlab-shell/config.yml via ucf
Registering /etc/gitlab/gitlab.yml via ucf

Creating config file /etc/gitlab/gitlab.yml with new version
Registering /etc/gitlab/gitlab-debian.conf via ucf

Creating config file /etc/gitlab/gitlab-debian.conf with new version
Create database if not present
Password:

Then it’s frozen. I don’t know what’s this password about. I tried writing one, wait a long time, but nothing happen after that. So installation is blocked and I can’t go further.

I also tried with package from installer and got the same behavior.

Any idea what’s going on?