Chaos-monkey Unsupported major.minor version 52.0

[gipster]

I try to run chaos monkey following https://github.com/cheyang/kube-chaosmonkey
I run a kubernetes cluster on minikube ( server url http://192.168.99.100:8443 ) and build the docker container locally
Issue is

When running:

docker run -d --net="bridge"
--name chaos-monkey
-e KUBERNETES_MASTER=http://192.168.99.100:8443
-e KUBERNETES_NAMESPACE=default
-e CHAOS_MONKEY_INCLUDES=zookeeper*,kafka*
-e CHAOS_MONKEY_EXCLUDES=zk2*
-e CHAOS_MONKEY_KILL_FREQUENCY_SECONDS=30
fabric8/chaos-monkey:2.2.335

Gives error:

Exception in thread "main" org.jboss.weld.exceptions.DeploymentException: io/fabric8/annotations/Eager : Unsupported major.minor version 52.0

I investigated and appear to be an issue with java versions mismatch

I also tried to write a Dockerfile to build the image locally from src but i get the following

When building docker image with Dockerfile:

FROM openjdk:8
RUN apt-get update
RUN apt-get install -y maven
RUN update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java

RUN git clone https://github.com/fabric8io/fabric8-devops/
WORKDIR /fabric8-devops/chaos-monkey

ADD .m2 /fabric8-devops/chaos-monkey/.m2
ADD pom.xml /fabric8-devops/chaos-monkey/pom.xml
RUN ["mvn", "-Dmaven.repo.local=./.m2", "dependency:resolve"]
RUN ["mvn", "-Dmaven.repo.local=./.m2", "verify"]
ADD src /fabric8-devops/chaos-monkey/src
...

Gives error:

Failed to execute goal io.fabric8:fabric8-maven-plugin:3.5.28:build (fmp) on project chaos-monkey: Execution fmp of goal io.fabric8:fabric8-maven-plugin:3.5.28:build failed: No given, no DOCKER_HOST environment variable, no read/writable '/var/run/docker.sock' or '//./pipe/docker_engine' and no external provider like Docker machine configured -> [Help 1]

It would be helpful to have the Dockerfile used to build the image.
thanks