Get jbang (you can get it from sdkman for instance). Then you can run the Spring Boot CLI:
$ jbang spring@scratches version
Spring CLI v2.4.5
or a vanilla config server:
$ jbang configserver@scratches
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.4.5)
...