sbt Native Packager

build.sbt

lazy val root = project.in(file("."))
    .settings(
        dockerBaseImage := "your/base/docker",
        dockerExposedPorts := Seq(1234),
        version in Docker := buildVersion)

plugins.sbt

addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.0.0)