feat: Add nginx:show-conf command
feat: Add nginx:show-conf command

Closes #3552

claytonbrown/dokku,progrium/dokku,jimjag/dokku,jimjag/dokku,progrium/dokku,dokku/dokku,progrium/dokku,jimjag/dokku,dokku/dokku,claytonbrown/dokku,progrium/dokku,progrium/dokku,dokku/dokku,claytonbrown/dokku,jimjag/dokku,progrium/dokku,dokku/dokku,jimjag/dokku,progrium/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,progrium/dokku,jimjag/dokku,jimjag/dokku,dokku/dokku,claytonbrown/dokku,jimjag/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku,claytonbrown/dokku