DEV: skip creating multisite db when running JS tests only

lib/tasks/db.rake

@@ -29,7 +29,7 @@ end
 task 'db:migrate', [:multisite] => ['environment', 'set_locale'] do |_, args|
   SeedFu.seed(DiscoursePluginRegistry.seed_paths)
 
-  if Rails.env.test? && !args[:multisite]
+  if Rails.env.test? && !args[:multisite] && !ENV["SKIP_MULTISITE"]
     system("rails db:schema:dump")
     system("MULTISITE=multisite rails db:schema:load")
     system("RAILS_DB=discourse_test_multisite rails db:migrate['multisite']")

lib/tasks/docker.rake

@@ -107,6 +107,10 @@ task 'docker:test' do
         @good &&= run_or_fail("bundle exec rake plugin:install_all_official")
       end
 
+      # this shaves all the creation of the multisite db off
+      # for js tests
+      ENV["SKIP_MULTISITE"] = "1" if ENV["JS_ONLY"]
+
       if ENV["SKIP_PLUGINS"]
         @good &&= run_or_fail("bundle exec rake db:migrate")
       else