feat(java): add OpenJ9 JVM example

Author: maxbrunet

java/Dockerfile.openj9

@@ -0,0 +1,19 @@
+# vim: ft=dockerfile
+FROM docker.io/ibm-semeru-runtimes:open-11-jdk AS build
+
+WORKDIR /src
+
+COPY gradle ./gradle
+COPY build.gradle settings.gradle gradlew ./
+RUN ./gradlew --version
+
+COPY . /src
+RUN ./gradlew build --no-daemon
+
+FROM docker.io/ibm-semeru-runtimes:open-11-jre
+
+WORKDIR /app
+
+COPY --from=build /src/build/libs/demo-0.0.1-SNAPSHOT.jar /app/demo.jar
+
+ENTRYPOINT ["java", "-XX:+PerfTool", "-jar", "/app/demo.jar"]

java/Makefile

@@ -1,3 +1,6 @@
 .PHONY: build
 build:
 	docker build -t parca-demo:java .
+
+build-openj9:
+	docker build -f Dockerfile.openj9 -t parca-demo:java-openj9 .