Adoptopenjdk 11 openj9

pom.xml

<plugins>
             <plugin>
                <groupId>com.google.cloud.tools</groupId>
                <artifactId>jib-maven-plugin</artifactId>
                <inherited>true</inherited>
                <configuration>
                    <from>
                        <image>adoptopenjdk/openjdk11-openj9:alpine-slim</image>
                    </from>
                    <extraDirectories>
                        <paths>
                            <path>
                                <from>target/classCache</from>
                                <into>/app-cache</into>
                            </path>
                        </paths>
                    </extraDirectories>
                    <container>
                        <jvmFlags>
                            <!-- <jvmFlag>-XshowSettings:vm</jvmFlag>-->
                            <jvmFlag>-Djava.security.egd=file:/dev/urandom</jvmFlag>
                            <jvmFlag>--add-opens=java.base/sun.nio.ch=ALL-UNNAMED</jvmFlag>
                            <jvmFlag>-Xshareclasses:name=${project.artifactId},cacheDir=/app-cache,readonly</jvmFlag>
                            <!-- https://developers.redhat.com/blog/2017/04/04/openjdk-and-containers/ -->
                            <jvmFlag>-Xss256k</jvmFlag>
                            <jvmFlag>-Xms32m</jvmFlag>
                            <jvmFlag>-XX:MinHeapFreeRatio=10</jvmFlag>
                            <jvmFlag>-XX:MaxHeapFreeRatio=20</jvmFlag>
                            <jvmFlag>-XX:GCTimeRatio=4</jvmFlag>
                            <jvmFlag>-XX:AdaptiveSizePolicyWeight=90</jvmFlag>
                        </jvmFlags>
                    </container>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <argLine>-Xshareclasses:name=${project.artifactId},cacheDir=target/classCache,enableBCI -Xscmx80M
                    </argLine>
                </configuration>
            </plugin>
</plugins>