The README contains the commands for building the blog in all different configurations.
Local Testing
Staging
$ jekyll serve --watch --config _config.yml,_config_staging.yml,_config_local.yml
Production
$ jekyll serve --watch --config _config.yml,_config_local.yml
Building
Staging
$ jekyll build --config _config.yml,_config_staging.yml
Production
$ jekyll build