Fix: set env var before running `rails db:setup`
Fix: set env var before running `rails db:setup`

Otherwise fails with:

	rails aborted!
	.authoring_base_url can't be empty

AusDTO/gov-au-beta,AusDTO/gov-au-beta,AusDTO/gov-au-beta,AusDTO/gov-au-beta,AusDTO/gov-au-beta