$ sdk install groovy 3.0.5

$ sdk install java 20.2.0.r11-grl

$ sdk use java 20.2.0.r11-grl

$ gu install native-image

$ groovyc --compile-static gttp.groovy

$ java -agentlib:native-image-agent=config-output-dir=conf/ -cp ".:$GROOVY_HOME/lib/groovy-3.0.5.jar" gttp 

$ native-image --allow-incomplete-classpath \
  --report-unsupported-elements-at-runtime \
  --initialize-at-build-time \
  --initialize-at-run-time=org.codehaus.groovy.control.XStreamUtils \
  --no-fallback \
  --no-server \
  -H:ConfigurationFileDirectories=conf/ \
  -cp ".:$GROOVY_HOME/lib/groovy-3.0.5.jar" \ 
  gttp

$ ./gttp
Listening at http://localhost:8080/

$ ./gttp 9000
Listening at http://localhost:9000/

$ ./gttp 9000 /tmp
Listening at http://localhost:9000/

$ sh ./build-with-docker.sh