### What problem does this PR solve?

Issue link:#221

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

Issue link:#[[Link the issue
here](https://github.com/infiniflow/ragflow/issues/226)]

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

* support snapshot download from local

* let snapshot download from local

* Refine README

* refine README

* refine README

* fix position extraction bug

* remove delimiter for naive parser

* feat: add nginx.conf

* feat: modify the root path of the web

* clean rust version project

* clean rust version project

* build python version rag-flow

* add field progress msg into docinfo; add file processing procedure

* go through upload, create kb, add doc to kb

* smoke test for all API

* smoke test for all API

* add field progress msg into docinfo; add file processing procedure

* go through upload, create kb, add doc to kb

* add docker compose

* add docker compose