Pushing a single image to multiple registries

workflow.groovy

node {
    //Using the DSL syntax
    kubernetes.image().withName("example").build().fromPath(".")
    kubernetes.image().withName("example").tag().inRepository('default/example').withTag("1.0")
    kubernetes.image().withName("default/example").push().withTag("1.0").toRegistry("172.30.101.121:5000")
    kubernetes.image().withName("default/example").push().withTag("1.0").toRegistry("172.30.101.122:5000")
    kubernetes.image().withName("default/example").push().withTag("1.0").toRegistry("172.30.101.123:5000")
}

node {
    //Using the functions with named parameters
    buildImage(name: 'example', path: '.')
    tagImage(name: 'example', repo: 'default/example', tag: '1.0')
    pushImage(name: 'default/example', tag: '1.0', registry: '172.30.101.121:5000')
    pushImage(name: 'default/example', tag: '1.0', registry: '172.30.101.122:5000')
    pushImage(name: 'default/example', tag: '1.0', registry: '172.30.101.123:5000')
}