git clone https://github.com/PantheonTechnologies/lighty-core.git
cd lighty-core
#git checkout master
-git checkout 14.0.x
-mvn clean install -DskipTests -Dmaven.javadoc.skip=true
+git checkout 15.1.x
+export JDK_JAVA_OPTIONS="--add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.nio=ALL-UNNAMED"
+mvn clean install -B -U -DskipTests -Dmaven.javadoc.skip=true -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn