[ETCM-403] PExpose application.conf and chains configs directory (#811)

Co-authored-by: Mirko Alic <31509803+mirkoAlic@users.noreply.github.com>

build.sbt

@@ -1,6 +1,7 @@
 enablePlugins(JDKPackagerPlugin, JavaAppPackaging, SolidityPlugin)
 
 import scala.sys.process.Process
+import NativePackagerHelper._
 
 // Necessary for the nix build, please do not remove.
 val nixBuild = sys.props.isDefinedAt("nix")
@@ -144,6 +145,10 @@ discoveredMainClasses in Compile := Seq()
 ThisBuild / jdkPackagerType := "image"
 
 Universal / mappings += (resourceDirectory in Compile).value / "logback.xml" -> "conf/logback.xml"
+Universal / mappings += (resourceDirectory in Compile).value / "application.conf" -> "conf/base.conf"
+Universal / mappings ++= directory((resourceDirectory in Compile).value / "chains").map { case (f, name) =>
+  f -> s"conf/$name"
+}
 
 val sep = java.io.File.separator
 jdkPackagerJVMArgs := Seq(

src/universal/conf/app.conf

@@ -1,5 +1,5 @@
 # This is the base configuration file for the Mantis ETC client.
 
-# This where all the default settings are defined (this file is packaged within the executable).
+# This where all the default settings are defined.
 # It should always go at the top.
-include "application.conf"
+include "base.conf"