Use JRE19 in container and fix artefact version

Dockerfile

@@ -1,11 +1,11 @@
-FROM ibm-semeru-runtimes:open-17-jdk as builder
+FROM ibm-semeru-runtimes:open-19-jdk as builder
 RUN apt-get update && apt-get install -y --no-install-recommends maven
 ADD . /app
 WORKDIR /app
 # We need some properties filled for the beans to be initialized properly; the values don't matter.
 RUN cp src/main/resources/application.yml.example src/main/resources/application.yml && \
 	mvn package -Dmaven.test.skip=true
 
-FROM ibm-semeru-runtimes:open-17-jre
-COPY --from=builder /app/target/junk-0.0.1-SNAPSHOT.jar /app.jar
+FROM ibm-semeru-runtimes:open-19-jre
+COPY --from=builder /app/target/junk-1.0.0-SNAPSHOT.jar /app.jar
 CMD ["java", "-jar", "/app.jar"]