GitLab Pages and docker

Hello,

I am trying to set-up gitlab pages on a docker installation of gitlab-ce.

I have defined the following variables in gitlab.rb, ie:

pages_external_url “http://my.site.com/
gitlab_pages[‘enable’] = true
gitlab_pages[‘external_http’] = [‘xxx.xxx.xxx.yyy:88’]
gitlab_pages[‘inplace_chroot’] = true

where xxx.xxx.xxx.yyy is the secondary IP address of the hosting machine.

Logs reveal the following:
{“error”:“listen tcp xxx.xxx.xxx.yyy:88: bind: cannot assign requested address”,“level”:“fatal”,“msg”:"",“time”:…

What am I doing wrong?

Thanks