Respect configuration parameter

build.cake

@@ -9,6 +9,7 @@ Settings.Cake = Context;
 Settings.Version = "3.22.24.30";
 Settings.BuildTarget = Argument("BuildTarget", "Default");
 Settings.Assembly = Argument("Assembly", "");
+var configuration = Argument("Configuration", "Release");
 
 var msbuildsettings = new DotNetCoreMSBuildSettings();
 var list = new List<GAssembly>();
@@ -42,7 +43,7 @@ Task("Prepare")
     DotNetCoreRestore("Source/Tools/Tools.sln");
     DotNetCoreBuild("Source/Tools/Tools.sln", new DotNetCoreBuildSettings {
         Verbosity = DotNetCoreVerbosity.Minimal,
-        Configuration = "Release"
+        Configuration = configuration
     });
 
     // Generate code and prepare libs projects
@@ -75,7 +76,7 @@ Task("Build")
 {
     var settings = new DotNetCoreBuildSettings
     {
-        Configuration = "Release",
+        Configuration = configuration,
         MSBuildSettings = msbuildsettings
     };
 
@@ -94,7 +95,7 @@ Task("RunSamples")
 {
     var settings = new DotNetCoreBuildSettings
     {
-        Configuration = "Release",
+        Configuration = configuration,
         MSBuildSettings = msbuildsettings
     };
 
@@ -109,7 +110,7 @@ Task("PackageNuGet")
     var settings = new DotNetCorePackSettings
     {
         MSBuildSettings = msbuildsettings,
-        Configuration = "Release",
+        Configuration = configuration,
         OutputDirectory = "BuildOutput/NugetPackages",
         NoBuild = true,
 
@@ -160,7 +161,7 @@ Task("PackageAddin")
     // Build MonoDevelop addin
     var msbuildsettings = new MSBuildSettings
     {
-        Configuration = "Release",
+        Configuration = configuration,
     };
     msbuildsettings = msbuildsettings.WithProperty("Version", Settings.Version);
     msbuildsettings = msbuildsettings.WithProperty("MDBinDir", "/opt/MonoDevelop/bin/");