Create the project's skeleton

DemoApp.scala

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+package demo
+
+import scala.collection.JavaConverters._
+
+object App {
+  def run(params: java.util.Map[String, String]) = {
+    println(s"Hello, Lambda! params = ${params.asScala.mkString(", ")}")
+  }
+}

README.md

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+# Minimal scala project for AWS Lambda
+
+- To build the project: `sbt dist`.
+- Upload the zip file generated in [target/universal](target/universal/) to AWS Lambda.
+- Configure the Lambda to use `demo.App::run` as the handler.
+
+Created for [Scala Central Meetup #22](https://www.meetup.com/Scala-Central/events/259324550/).
+The presentation was [recorded in video](https://www.youtube.com/watch?v=ws4TZSpQlcU).

build.sbt

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+enablePlugins(JavaAppPackaging)
+Universal / topLevelDirectory := None

project/build.properties

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+sbt.version=1.2.8

project/plugins.sbt

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+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.19")