Generating a scratch-based container image with a GraalVM static native-image binary (via sbt-native-packager's GraalVMNativeImagePlugin and DockerPlugin)

build.sbt

enablePlugins(
  GraalVMNativeImagePlugin,
  DockerPlugin
)

GraalVMNativeImage / containerBuildImage := Some("ghcr.io/graalvm/native-image")

GraalVMNativeImage / graalVMNativeImageOptions += "--static"

GraalVMNativeImage / packageBin := (GraalVMNativeImage / packageBin).map { f =>
  scala.sys.process.Process(Seq("chmod", "u+x", f.absolutePath)).!!; f
}.value

dockerExecCommand := Seq("podman") // for those who use podman

dockerBaseImage := "scratch"

dockerPermissionStrategy := com.typesafe.sbt.packager.docker.DockerPermissionStrategy.None

Docker / daemonUserUid := None

dockerCommands := dockerCommands.value.filter {
  case com.typesafe.sbt.packager.docker.Cmd("USER", _*) => false
  case _                                                => true
}

Docker / mappings := Seq(
  (GraalVMNativeImage / packageBin).value ->
    (Docker / dockerEntrypoint).value.head
)