Fix staging/prod hosting deploy issues & apply CI improvements

[klepas]

From Mick:

• You are hosting staging and prod on the staging cloud.gov.au
• Prod has a single instance only so there is an outage for every site in prod using uikit everytime there is a deploy done
• the org and space name you are using is dto/dtomisc

Actions

• email [email protected] asking for a proper org and space (same on stage and prod)
• take the CI/CD improvements from https://github.com/AusDTO/dta-website
• Announce to all consumers of the change of url