type DB struct {
Net string `env:"DB_NET"`
Driver string `env:"DB_DRIVER"`
Name string `env:"DB_NAME"`
User string `env:"DB_USER"`
Password string `env:"DB_PASSWORD"`
Host string `env:"DB_HOST"`
MaxConn int `env:"DB_MAXCONN"`
Port string `env:"DB_PORT"`
Timeout int `env:"DB_TIMEOUT"`
}