Add option to config to differentiate between exrm and distillery runs

lib/exrm_deb/config.ex

@@ -8,7 +8,7 @@ defmodule ExrmDeb.Config do
   defstruct name: nil, version: nil, licenses: nil, maintainers: nil,
             external_dependencies: nil, maintainer_scripts: [],
             config_files: [], homepage: nil, description: nil,
-            vendor: nil, arch: nil,
+            vendor: nil, arch: nil, distillery: false,
             owner: [user: "root", group: "root"]
 
   use Vex.Struct
@@ -38,7 +38,8 @@ defmodule ExrmDeb.Config do
         {:name, Atom.to_string(release.name)},
         {:version, release.version},
         {:description, Project.config[:description]},
-        {:arch, Utils.Config.detect_arch}
+        {:arch, Utils.Config.detect_arch},
+        {:distillery, true}
       ] ++ config_from_package(Project.config[:package])
 
     base_config =

lib/exrm_deb/data.ex

@@ -4,6 +4,7 @@ defmodule ExrmDeb.Data do
   debian package.
   """
   alias ReleaseManager.Utils.Logger
+  alias ReleaseManager.Utils
   alias ExrmDeb.Utils.Compression
   alias ExrmDeb.Generators.{Changelog, Upstart, Systemd}
   alias Mix.Project
@@ -35,7 +36,7 @@ defmodule ExrmDeb.Data do
   end
 
 
-  # We don't use/need the .tar.gz file built be exrm, so
+  # We don't use/need the .tar.gz file built by exrm, so
   # remove it from the data dir to reduce filesize.
   defp remove_targz_file(data_dir, config) do
     [data_dir, "opt", config.name, "#{config.name}-#{config.version}.tar.gz"]
@@ -54,11 +55,19 @@ defmodule ExrmDeb.Data do
 
   defp copy_release(data_dir, config) do
     dest = Path.join([data_dir, "opt", config.name])
-    src = Path.join([Project.build_path, "rel", config.name])
+    src = src_path(config)
 
     debug("Copying #{src} into #{dest} directory")
     {:ok, _} = File.cp_r(src, dest)
 
     dest
   end
+
+  defp src_path(%ExrmDeb.Config{distillery: true} = config) do
+    Path.join([Project.build_path, "rel", config.name])
+  end
+
+  defp src_path(config) do
+    Path.join([Utils.rel_dest_path, config.name])
+  end
 end