gradle-training/10-custom-task-dofirst/build.gradle

task helloWorld {
    // Configuration phase - Gradle learns about tasks.
    // This scope is executed first
    description "Say hello :-)"

    doFirst {
        // Execution phase
        println "Sunny day."
    }
    doLast {
        // Execution phase
        println "Greetings from Brno"
    }
}