Gitlab will fail if you use duplicate email addresses - Use unique values for all form entrees!
Today I tried to deploy the data lake and it kept failing on GitLabs. After a couple of failed attempts, I realized that you can't use the same email address for GIT admin & GIT TAC.
I wouldn't call this a bug.. More of a reminder to not be lazy. If you don't want to waste a lot of time with failed deployments, use unique values for every field in the form. This is a production ready script and it works best when you treat it as such.