Re-organize project structure

This project have to restruct like below

```
_ v1
  \_ Dockerfile
  \_ CHANGELOG.md
_ v2
  \_ Dockerfile
  \_ CHANGELOG.md
_ v3
  \_ Dockerfile
  \_ CHANGELOG.md
_ config (For initial global configurations)
  \_ codebeamer
  \_ mysql
      \_ my.cnf
  \_ nginx
      \_ vhost.conf
_ docker-compose.yml
_ README.md
_ LICENSE
```