'Deploy to' label on environment is not necessarily right
Under Operations > Environments > Environment the 'play' button says Deploy to...
for all manual jobs in .gitlab-ci.yml
. In case of review apps we generally stop them to clean up the old environment. We're not deploying anything at that time.
CI / CD > Pipelines has Manual job
as its label. Which doesn't do anything (a bit weird from a UX perspective) but it is a better label.