Production build orderCore is missing

My colleague has provided a proposal:

If you want to use Spartacus Order library, you need to create "order-feature.module.ts" for it. And by default core is bundled together with components. So, in your configuration, you need have this set: "[ORDER_CORE_FEATURE]: ORDER_FEATURE". So, the config is something like this:

const config: CmsConfig = {
    featureModules: {
         [ORDER_FEATURE]: {
                cmsComponents: [
                   ....
                ],
          },
        // by default core is bundled together with components
        [ORDER_CORE_FEATURE]: ORDER_FEATURE,
     },
};