Make sure Unicorn listens on localhost:8080

[ci skip]

doc/update/7.14-to-8.0.md

@@ -87,6 +87,19 @@ cd gitlab-git-http-server
 sudo -u git -H make
 ```
 
+Make sure your unicorn.rb file contains a 'listen' line for
+'127.0.0.1:8080' and that this line is not commented out.
+
+```
+cd /home/git/gitlab
+grep ^listen config/unicorn.rb
+
+# If there is no 'listen' line for 127.0.0.1:8080, add it:
+sudo -u git tee -a config/unicorn.rb <<EOF
+listen "127.0.0.1:8080", :tcp_nopush => true
+EOF
+```
+
 If your Git repositories are in a directory other than `/home/git/repositories`,
 you need to tell `gitlab-git-http-server` about it via `/etc/gitlab/default`.
 See `lib/support/init.d/gitlab.default.example` for the options.