Bump scala-packager to 0.2.1 & enable adding extra directories to a docker image

modules/cli/src/main/scala/scala/cli/commands/package0/Package.scala

@@ -683,7 +683,8 @@ object Package extends ScalaCommand[PackageOptions] with BuildCommandHelpers {
       repository = repository,
       tag = Some(tag),
       exec = exec,
-      dockerExecutable = None
+      dockerExecutable = None,
+      extraDirectories = packageOptions.dockerOptions.extraDirectories.map(_.toNIO)
     )
 
     val appPath = os.temp.dir(prefix = "scala-cli-docker") / "app"

modules/cli/src/main/scala/scala/cli/commands/package0/PackageOptions.scala

@@ -219,7 +219,8 @@ final case class PackageOptions(
             imageRepository = packager.dockerImageRepository,
             imageTag = packager.dockerImageTag,
             cmd = packager.dockerCmd,
-            isDockerEnabled = Some(docker)
+            isDockerEnabled = Some(docker),
+            extraDirectories = packager.dockerExtraDirectories.map(os.Path(_, os.pwd))
           ),
           nativeImageOptions = NativeImageOptions(
             graalvmJvmId = packager.graalvmJvmId.map(_.trim).filter(_.nonEmpty),

modules/cli/src/main/scala/scala/cli/commands/package0/PackagerOptions.scala

@@ -138,6 +138,11 @@ final case class PackagerOptions(
   )
   @Tag(tags.restricted)
   dockerCmd: Option[String] = None,
+
+  @Group(HelpGroup.Docker.toString)
+  @HelpMessage("Extra directories to be added to the docker image")
+  @Tag(tags.restricted)
+  dockerExtraDirectories: List[String] = Nil,
 
   @Group(HelpGroup.NativeImage.toString)
   @HelpMessage(s"GraalVM Java major version to use to build GraalVM native images (${Constants.defaultGraalVMJavaVersion} by default)")

modules/directives/src/main/scala/scala/build/errors/WrongDirectoryPathError.scala

@@ -0,0 +1,7 @@
+package scala.build.errors
+
+class WrongDirectoryPathError(cause: Throwable) extends BuildException(
+      message = s"""The directory path argument in the using directives at could not be found!
+                   |${cause.getLocalizedMessage}""".stripMargin,
+      cause = cause
+    )

modules/directives/src/main/scala/scala/build/preprocessing/directives/Packaging.scala

@@ -10,11 +10,13 @@ import scala.build.errors.{
   BuildException,
   CompositeBuildException,
   MalformedInputError,
-  ModuleFormatError
+  ModuleFormatError,
+  WrongDirectoryPathError
 }
 import scala.build.options.*
 import scala.build.options.packaging.{DockerOptions, NativeImageOptions}
 import scala.cli.commands.SpecificationLevel
+import scala.util.Try
 
 @DirectiveGroupName("Packaging")
 @DirectivePrefix("packaging.")
@@ -28,6 +30,10 @@ import scala.cli.commands.SpecificationLevel
 @DirectiveExamples("//> using packaging.dockerImageRepository scala-cli")
 @DirectiveExamples("//> using packaging.dockerCmd sh")
 @DirectiveExamples("//> using packaging.dockerCmd node")
+@DirectiveExamples(
+  "//> using packaging.dockerExtraDirectories path/to/directory1 path/to/directory2"
+)
+@DirectiveExamples("//> using packaging.dockerExtraDirectory path/to/directory")
 @DirectiveUsage(
   """using packaging.packageType [package type]
     |using packaging.output [destination path]
@@ -38,6 +44,7 @@ import scala.cli.commands.SpecificationLevel
     |using packaging.dockerImageRegistry [image registry]
     |using packaging.dockerImageRepository [image repository]
     |using packaging.dockerCmd [docker command]
+    |using packaging.dockerExtraDirectories [directories]
     |""".stripMargin,
   """`//> using packaging.packageType` _package-type_
     |
@@ -57,6 +64,9 @@ import scala.cli.commands.SpecificationLevel
     |
     |`//> using packaging.dockerCmd` _docker-command_
     |
+    |`//> using packaging.dockerExtraDirectories` _directories_
+    |`//> using packaging.dockerExtraDirectory` _directory_
+    |
     |""".stripMargin
 )
 @DirectiveDescription("Set parameters for packaging")
@@ -70,7 +80,10 @@ final case class Packaging(
   dockerImageTag: Option[String] = None,
   dockerImageRegistry: Option[String] = None,
   dockerImageRepository: Option[String] = None,
-  dockerCmd: Option[String] = None
+  dockerCmd: Option[String] = None,
+  @DirectiveName("dockerExtraDirectory")
+  dockerExtraDirectories: DirectiveValueParser.WithScopePath[List[Positioned[String]]] =
+    DirectiveValueParser.WithScopePath.empty(Nil)
 ) extends HasBuildOptions {
   def buildOptions: Either[BuildException, BuildOptions] = either {
     val maybePackageTypeOpt = packageType
@@ -110,6 +123,23 @@ final case class Packaging(
         .left.map(CompositeBuildException(_))
     }
 
+    val cwd              = dockerExtraDirectories.scopePath
+    val extraDirectories = value {
+      dockerExtraDirectories
+        .value
+        .map { posPathStr =>
+          val eitherRootPathOrBuildException =
+            Directive.osRoot(cwd, posPathStr.positions.headOption)
+          eitherRootPathOrBuildException.flatMap { root =>
+            Try(os.Path(posPathStr.value, root))
+              .toEither
+              .left.map(new WrongDirectoryPathError(_))
+          }
+        }
+        .sequence
+        .left.map(CompositeBuildException(_))
+    }
+
     BuildOptions(
       internal = InternalOptions(
         keepResolution = provided0.nonEmpty || packageTypeOpt.contains(PackageType.Spark)
@@ -124,7 +154,8 @@ final case class Packaging(
             imageRegistry = dockerImageRegistry,
             imageRepository = dockerImageRepository,
             imageTag = dockerImageTag,
-            cmd = dockerCmd
+            cmd = dockerCmd,
+            extraDirectories = extraDirectories
           ),
           nativeImageOptions = NativeImageOptions(
             graalvmArgs = graalvmArgs

modules/integration/src/test/scala/scala/cli/integration/PackageTestDefinitions.scala

@@ -1118,13 +1118,62 @@ abstract class PackageTestDefinitions extends ScalaCliSuite with TestScalaVersio
     }
   }
 
-  if (Properties.isLinux)
+  def dockerWithExtraDirsTest(): Unit = {
+    val codePath       = os.rel / "src" / "Hello.scala"
+    val extraFileName  = "extraFile.txt"
+    val extraFileDir   = os.rel / "extraDir"
+    val extraFilePath  = extraFileDir / extraFileName
+    val imageName      = "extradir"
+    val expectedOutput = "hello"
+    val inputs         = TestInputs(
+      codePath ->
+        s"""//> using toolkit default
+           |
+           |object Smth extends App {
+           |  val content = 
+           |   os.walk(os.pwd)
+           |     .filter(os.isFile)
+           |     .filter(_.endsWith(os.rel / "$extraFileName"))
+           |     .headOption
+           |     .map(file => os.read(file).trim())
+           |     .getOrElse("No matching files found")
+           |  println(content)
+           |}
+           |""".stripMargin,
+      extraFilePath -> expectedOutput
+    )
+    inputs.fromRoot { root =>
+      os.proc(
+        TestUtil.cli,
+        "--power",
+        "package",
+        codePath,
+        "--docker",
+        "--docker-image-repository",
+        imageName,
+        "--docker-extra-directories",
+        root / extraFileDir,
+        "-f"
+      ).call(cwd = root)
+      val output = os.proc("docker", "run", imageName).call(cwd = root).out.trim()
+      expect(output == expectedOutput)
+    }
+  }
+
+  if (Properties.isLinux) {
     test("pass java options to docker") {
       TestUtil.retryOnCi() {
         javaOptionsDockerTest()
       }
     }
 
+    test("pass extra directory to docker") {
+      TestUtil.retryOnCi() {
+        dockerWithExtraDirsTest()
+      }
+    }
+  }
+
   test("default values in help") {
     TestInputs.empty.fromRoot { root =>
       val res = os.proc(TestUtil.cli, "--power", "package", extraOptions, "--help").call(cwd = root)

modules/options/src/main/scala/scala/build/options/packaging/DockerOptions.scala

@@ -8,7 +8,8 @@ final case class DockerOptions(
   imageRepository: Option[String] = None,
   imageTag: Option[String] = None,
   cmd: Option[String] = None,
-  isDockerEnabled: Option[Boolean] = None
+  isDockerEnabled: Option[Boolean] = None,
+  extraDirectories: Seq[os.Path] = Nil
 )
 
 object DockerOptions {

project/deps/package.mill.scala

@@ -134,7 +134,7 @@ object Deps {
     def maxScalaNativeForTypelevelToolkit = scalaNative04
     def maxScalaNativeForScalaPy          = scalaNative04
     def maxScalaNativeForMillExport       = scalaNative05
-    def scalaPackager                     = "0.2.0"
+    def scalaPackager                     = "0.2.1"
     def signingCli                        = "0.2.11"
     def signingCliJvmVersion              = Java.defaultJava
     def javaSemanticdb                    = "0.10.0"

website/docs/reference/cli-options.md

@@ -972,6 +972,10 @@ The image tag; the default tag is `latest`
 
 Allows to override the executable used to run the application in docker, otherwise it defaults to sh for the JVM platform and node for the JS platform
 
+### `--docker-extra-directories`
+
+Extra directories to be added to the docker image
+
 ### `--graalvm-java-version`
 
 GraalVM Java major version to use to build GraalVM native images (17 by default)

website/docs/reference/directives.md

@@ -300,6 +300,9 @@ Set parameters for packaging
 
 `//> using packaging.dockerCmd` _docker-command_
 
+`//> using packaging.dockerExtraDirectories` _directories_
+`//> using packaging.dockerExtraDirectory` _directory_
+
 
 
 #### Examples
@@ -323,6 +326,10 @@ Set parameters for packaging
 
 `//> using packaging.dockerCmd node`
 
+`//> using packaging.dockerExtraDirectories path/to/directory1 path/to/directory2`
+
+`//> using packaging.dockerExtraDirectory path/to/directory`
+
 ### Platform
 
 Set the default platform to Scala.js or Scala Native