Migrate to Reactor.MSBuild

build.cake

@@ -0,0 +1,34 @@
+var target = Argument("target", "Build");
+
+var buildId = EnvironmentVariable("GITHUB_RUN_NUMBER");
+
+var @ref = EnvironmentVariable("GITHUB_REF");
+const string prefix = "refs/tags/";
+var tag = !string.IsNullOrEmpty(@ref) && @ref.StartsWith(prefix) ? @ref.Substring(prefix.Length) : null;
+
+Task("Build")
+    .Does(() =>
+{
+    var settings = new DotNetCoreBuildSettings
+    {
+        Configuration = "Release",
+        MSBuildSettings = new DotNetCoreMSBuildSettings()
+    };
+
+    if (tag != null) 
+    {
+        settings.MSBuildSettings.Properties["Version"] = new[] { tag };
+    }
+    else if (buildId != null)
+    {
+        settings.VersionSuffix = "ci." + buildId;
+    }
+
+    foreach (var gamePlatform in new[] { "Steam", "Itch" })
+    {
+        settings.MSBuildSettings.Properties["GamePlatform"] = new[] { gamePlatform };
+        DotNetCoreBuild(".", settings);
+    }
+});
+
+RunTarget(target);