Test how properties work in Spring Boot.
Spring version 2.7.6 (same as norse-application).
You’re supposed to use the profiles in groups.properties: each group
is a profile.
These are supposed to simulate different prod and dev profiles.
They are “self-contained”, i.e. you don’t have to run the application with any other Spring profiles.
See the t properties (e.g. application-t-dev-config.properties).
Run t-dev or t-prod.
See the fail properties (e.g. application-fail-prod.properties).