now the company has a need to get rid of Ubuntu"s desktop system and make it simple, leaving only some basic services. There are two ways of thinking: one is to subtract from an off-the-shelf Ubuntu system to remove some off-the-shelf services, and the other is to compile the kernel and customize to add some new services. Which way is easier to achieve? Or is there any good way. Xiaobai, please give me a lot of advice, thank you.