With the latest version (1.9.5), `Docker / version` is detected as "not used" by sbt

[guizmaii]

Expected behaviour

We have some definitions for our Docker build:

object BuildHelper {
  lazy val dockerSettings = Seq(
    Docker / maintainer       := "...",
    Docker / daemonUser       := "...",
    Docker / dockerRepository := Some("..."),
    Docker / packageName      := packageName.value,
    dockerUpdateLatest        := false,
    dockerExposedPorts        := Seq(8080),
    dockerBaseImage           := "ubuntu:latest",
    Docker / version          := s"$release-$version",  // this is the line 63 that sbt talks about
  )
}

I just updated to the latest version of sbt-native-packager and since the update sbt tells me this:

[warn] there's a key that's not used by any other settings/tasks:
[warn]  
[warn] * app-build / Docker / version
[warn]   +- BuildHelper.scala:63

I had a quick look at the changes between 1.9.4 and 1.9.5. It could be because of this change: https://github.com/sbt/sbt-native-packager/compare/v1.9.4...v1.9.5#diff-b866751bc91854625b6a5d821ae6a4df02736ceb3581779d81319caee1d9d2cdR100

This Option((version in Docker).value) piece of code have been changed for Option((version).value). Should it be Option((Docker / version).value) instead?

cc @frankivo