fix pioneer and joystream/apps docker build

pioneer/packages/apps/public/locales/en/joy-media.json

@@ -0,0 +1 @@
+{}

pioneer/packages/joy-utils/src/consts/workingGroups.ts

@@ -1,5 +1,7 @@
 import { WorkingGroupKey } from '@joystream/types/common';
 export const apiModuleByGroup: { [k in WorkingGroupKey]: string } = {
   Storage: 'storageWorkingGroup',
-  Content: 'contentDirectoryWorkingGroup'
+  Content: 'contentDirectoryWorkingGroup',
+  Builder: 'builderWorkingGroup',
+  Gateway: 'gatewayWorkingGroup'
 };