Skip CSS build if environment variable SKIP_CSS_BUILD is set.

Author: natsuokawai

lib/tasks/build.rake

@@ -32,10 +32,12 @@ namespace :dartsass do
   end
 end
 
-Rake::Task["assets:precompile"].enhance(["dartsass:build"])
+unless ENV["SKIP_CSS_BUILD"]
+  Rake::Task["assets:precompile"].enhance(["dartsass:build"])
 
-if Rake::Task.task_defined?("test:prepare")
-  Rake::Task["test:prepare"].enhance(["dartsass:build"])
-elsif Rake::Task.task_defined?("db:test:prepare")
-  Rake::Task["db:test:prepare"].enhance(["dartsass:build"])
+  if Rake::Task.task_defined?("test:prepare")
+    Rake::Task["test:prepare"].enhance(["dartsass:build"])
+  elsif Rake::Task.task_defined?("db:test:prepare")
+    Rake::Task["db:test:prepare"].enhance(["dartsass:build"])
+  end
 end