**
How to install mysql-8 on ubuntu 18.04 LTS
**
step1: you should download mysql-apt-config in the web:
https://dev.mysql.com/downloads/file/?id=477124
step2: you should use commend:
sudo apt-get instll mysql-server
sudo apt-get instll mysql-client
sudo apt-get instll libmysqlclient-dev
step3: