Re-entrant scripts or maybe Terraform or CloudFormation?

[recfab]

Hi,

I'm working through your Route 53 course.

The powershell scripts are great but I'm having some issues with lab-setup.ps1. When it errors, it doesn't seem to check for partial prior runs, and so I get duplicate records. I'm on a brand new AWS account, so I think that's the reason for the failures. Can these script be made a bit smarter?

Alternatively, what about Terraform or CloudFormation templates to create these resources, in addition to the scripts.

I will be adding Terraform in my fork of this repo anyway, since that will match our production use case. Would you accept a PR with such changes if I submitted one?