build.gradle

import org.gradle.api.tasks.Exec

task initDOT {
   String projectDir = "."
   doLast {
   if(! new File("${projectDir}/dita-ot/oxygen-publishing-engine/").exists()){
       //https://www.oxygenxml.com/InstData/PublishingEngine/oxygen-publishing-engine.zip
       //https://archives.oxygenxml.com/Nightly/PublishingEngine/oxygen-publishing-engine.zip
       ant.get(src: 'https://www.oxygenxml.com/InstData/PublishingEngine/oxygen-publishing-engine.zip', dest: "${projectDir}/dita-ot.zip", skipexisting: 'true')
       ant.unzip(src: "${projectDir}/dita-ot.zip", dest: 'dita-ot')
       new File("${projectDir}/dita-ot/oxygen-publishing-engine/licensekey.txt").write(System.getenv( 'LICENSE_KEY' ).replaceAll("  ", "\n"))
    }
  }
}

task runTransformation(type:Exec, dependsOn: [initDOT]) {
 workingDir "${projectDir}/dita-ot/oxygen-publishing-engine/bin"
 commandLine "sh", "${projectDir}/dita-ot/oxygen-publishing-engine/bin/dita", "--output=.", "--project", "${projectDir}/../blog-project.xml"
}

task copySite(type: Copy, dependsOn: [runTransformation]) {
    from "${projectDir}/dita-ot/oxygen-publishing-engine/bin/site"
    into "${projectDir}/../site"
}

task copyResources(type: Copy) {
    from "${projectDir}/../resources/"
    into "${projectDir}/../site/resources"
}

task dist(dependsOn: [copySite, copyResources])

defaultTasks 'dist'