I've set up Gitlab on Ubuntu 12.04 using the default package from https://about.gitlab.com/downloads/

As I had Apache installed already I have to run nginx on localhost:8888. The problem is, all images (such as avatars) are now served from that url, and all the checkout urls Gitlab gives are also the same - instead of using my domain name.

If I change /etc/gitlab/gitlab.rb to use that url, then Gitlab stops working and gives a 503.

Any ideas how I can tell Gitlab what URL to present to the world, even though it's really running on localhost?

/etc/gitlab/gitlab.rb looks like:

# Change the external_url to the address your users will type in their browser
external_url 'http://my.local.domain'
redis['port'] = 6379
postgresql['port'] = 2345
unicorn['port'] = 3456

and /opt/gitlab/embedded/conf/nginx.conf looks like:

server {
        listen       localhost:8888;
        server_name  my.local.domain;