Jenkins.2

#!groovy

def scmvars
def image

node {
    stage('clone') {
        // enabled by project type "Pipeline script from SCM"
        scmvars = checkout(scm)
        echo "git details: ${scmvars}"
    }
    stage('env') {
        // Jenkins provides no environment variable view
        sh 'printenv|sort'
    }
    stage('build') {
        // arg 1 is the image name and tag
        // arg 2 is docker build command line
        image = docker.build("com.mycompany.myproject/my-image:${env.BUILD_ID}",
              " --build-arg commit=${scmvars.GIT_COMMIT}"
            + " --build-arg http_proxy=${env.http_proxy}"
            + " --build-arg https_proxy=${env.https_proxy}"
            + " --build-arg no_proxy=${env.no_proxy}"
            + ' path/to/dir/with/Dockerfile')
    }
    stage('push') {
        docker.withRegistry('https://registry.mycompany.com:8100', 'jenkins-registry-credential-id') {
            image.push()
        }
    }
}