docker mysql
docker run -p 3306:3306 --name mymysql -v $PWD/mysql.conf.d:/etc/mysql/mysql.conf.d/ -v $PWD/logs:/var/log/mysql -v $PWD/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6
Update-Database -context SocialClass.WebApi.SqlServerDesignTimeDefaultDbContext
Add-Migration school -context "SocialClass.WebApi.SqlServerDesignTimeDefaultDbContext"