Within build.gradle, how do I name war file different from project name

When I build my war file I would like to give it a name different from my rootProject.name as defined in settings.gradle
Is there a setting in build.gradle that allows me to do that ?

You can configure the bootWar task of the Spring Boot Gradle Plugin by adding the following to the build.gradle file:

bootWar {
    archiveFileName = 'somename.war'
}