New test server(s) for Mylyn builds

The Mylyn project currently uses servers (gerrit, bugzilla jenkin, etc.) running on https://mylyn.org/, a server sponsored by Tasktop.com, for the unit test validation of its code. Tasktop have said that they no longer maintaining the server and has indicated that they will retire the server at some point in the future.

One possible solution to this is run the unit test against services running on Docker images. I've implemented a Proof Of Concept of this using TestContainers that runs on fine my local machine against a Jenkins server docker image, but when the Jenkins server on https://ci.eclipse.org/mylyn ran the code it complained with:

79513 [main] INFO org.testcontainers.dockerclient.DockerMachineClientProviderStrategy - docker-machine executable was not found on PATH ([/opt/tools/java/openjdk/jdk-17/latest/bin, /opt/tools/apache-maven/latest/bin, /opt/tools/java/openjdk/jdk-17/latest/bin, /opt/tools/apache-maven/latest/bin, /usr/local/sbin, /usr/local/bin, /usr/sbin, /usr/bin, /sbin, /bin])
79547 [main] ERROR org.testcontainers.dockerclient.DockerClientProviderStrategy - Could not find a valid Docker environment. Please check configuration. Attempted configurations were: UnixSocketClientProviderStrategy: failed with exception InvalidConfigurationException (Could not find unix domain socket). Root cause NoSuchFileException (/var/run/docker.sock) DockerDesktopClientProviderStrategy: failed with exception NullPointerException (Cannot invoke "java.nio.file.Path.toString()" because the return value of "org.testcontainers.dockerclient.DockerDesktopClientProviderStrategy.getSocketPath()" is null) As no valid configuration was found, execution cannot continue.

When I look at https://wiki.eclipse.org/Jenkins I see:

I want to build a custom Docker image (with docker build), but it does not work. What should I do?
  You cannot currently build images on the cluster (i.e. docker build does not work). We plan to address this shortcoming shortly.

This note was added to the page in 2018.

So I'm wondering if the docker engine could be installed on the Jenkins server to be used as a possible replacement for mylyn.org?

If this is not possible, is there any other way a Test instance for the servers could be set up on the Eclipse infrastructure that can be accessed by the Mylyn build?

Thanks

George