When you build the admin panel you also need to include the NODE_ENV setting, so to build the admin in production you need to use NODE_ENV=production npm run build same applies for running Strapi NODE_ENV=production npm run start
When you build the admin panel you also need to include the NODE_ENV setting, so to build the admin in production you need to use NODE_ENV=production npm run build same applies for running Strapi NODE_ENV=production npm run start