Help with parallel docker (via Gradle) builds?

Help/Discuss
1

I’m fairly new to Gradle, though have lots of Maven experience so I understand the concept. We have the following, OLD I know, but we are slowly transitioning to 4.10.x

Also this is NOT a Jenkins pipeline question, in spite of the Jenkins pipeline code, but I just wanted to show what we’re doing in context.

$ ./gradlew --version

------------------------------------------------------------
Gradle 2.9
------------------------------------------------------------

Build time:   2015-11-17 07:02:17 UTC
Build number: none
Revision:     b463d7980c40d44c4657dc80025275b84a29e31f

Groovy:       2.4.4
Ant:          Apache Ant(TM) version 1.9.3 compiled on December 23 2013
JVM:          1.8.0_181 (Oracle Corporation 25.181-b13)
OS:           Mac OS X 10.13.6 x86_64

We have a Jenkins file that tries to do parallel builds for our Docker images via Gradle. We do, this, which calls the buildDocker task in our build.gradle files.

def buildDockerImages(gradleProjectFlag, version)
{
  sh "./gradlew buildDocker ${gradleProjectFlag} -P{$vwrsion} --parallel"
}

node('linux') {
  stage('Build Docker images') {
      parallel(
        "module1" :   {
            buildDockerImage("module1", "1.0.0")
        }
        "module2" :   {
            buildDockerImage("module2", "1.0.0")
        }
      )
   }
}

and our buildDocker task is…

task buildDocker(type: Docker, dependsOn: war) {
    doFirst {
        copy {
            from war
            rename { name -> 'app.war' }
            into stageDir
        }
    }
    def dockerTag = project.hasProperty('applicationName') ? project.applicationName : project.name
    tag = dockerTag
    dockerfile = file("$rootDir/deploy/docker/webapp/Dockerfile")
    doLast {
        exec {
            commandLine 'docker', 'tag', tag, "${dockerTag}:latest"
        }
    }
}

A lot of times, our builds will fail and the only error I get on the Jenkins console is, which is SIGTERM (143-128=15, SIGTERM, 128 is what Jenkins adds to the signal received by the process if I understand correctly. See https://stackoverflow.com/questions/6963811/jvm-returns-error-143)

ERROR: script returned exit code 143

My question is there anything ELSE I need to do to ensure our parallel builds work 100%? We do daemonize our Gradle process.

Thanks!