Discard Gradle Welcome message

[anthonydahanne]

Every time Gradle runs within the buildpack, it will print a welcome message to the user; since Gradle does that the first time it's run.

[builder]       Welcome to Gradle 7.6!
[builder]       
[builder]       Here are the highlights of this release:
[builder]        - Added support for Java 19.
[builder]        - Introduced `--rerun` flag for individual task rerun.
[builder]        - Improved dependency block for test suites to be strongly typed.
[builder]        - Added a pluggable system for Java toolchains provisioning.
[builder]       
[builder]       For more details see https://docs.gradle.org/7.6/release-notes.html

Possible Solution

There's a way to discard this message, using a flag that could be appended as a default flag, such as we already do with --no-demon : -Dorg.gradle.welcome=never ; see this SO post for example
For example, here's a workaround for now:

pack build applications/native-image4 \
  --builder paketobuildpacks/builder-jammy-tiny \
  --env BP_NATIVE_IMAGE=true --env BP_GRADLE_ADDITIONAL_BUILD_ARGUMENTS=-Dorg.gradle.welcome=never
[...]
[builder]     Executing gradlew --no-daemon assemble -Dorg.gradle.welcome=never
[builder]       Downloading https://services.gradle.org/distributions/gradle-7.6-bin.zip
[builder]       ...........10%............20%...........30%............40%............50%...........60%............70%............80%...........90%............100%
[builder]       To honour the JVM settings for this build a single-use Daemon process will be forked. See https://docs.gradle.org/7.6/userguide/gradle_daemon.html#sec:disabling_the_daemon.
[builder]       Daemon will be stopped at the end of the build 
[builder]       > Task :compileJava
[builder]       > Task :processResources
[builder]       > Task :classes
[builder]       > Task :resolveMainClassName
[builder]       
[builder]       > Task :processAot

Motivation

I think it pollutes the logs, and would like them removed