I want to use llamaindex. My input would be a slack export but I don't want any data to go to openai I want it all to happen locally or within my own EC2 instan

I want to use llamaindex. My input would be a slack export but I don't want any data to go to openai I want it all to happen locally or within my own EC2 instance. I have seen https://github.com/jerryjliu/llama_index/blob/046183303da4161ee027026becf25fb48b67a3d2/docs/how_to/custom_llms.md#example-using-a-custom-llm-model https://github.com/jerryjliu/llama_index/blob/046183303da416... but it calls hugging face. My plan was to use https://github.com/cocktailpeanut/dalai https://github.com/cocktailpeanut/dalai with the alpaca model then somehow use llamaindex to input my dataset - a slack export. But it's not too clear how to train the alpaca model.