general domain include root domain

internal/applicant/applicant.go

@@ -130,8 +130,16 @@ func apply(option *ApplyOption, provider challenge.Provider) (*Certificate, erro
 	}
 	myUser.Registration = reg
 
+	domains := []string{option.Domain}
+
+	// 如果是通配置符域名，把根域名也加入
+	if strings.HasPrefix(option.Domain, "*.") && len(strings.Split(option.Domain, ".")) == 3 {
+		rootDomain := strings.TrimPrefix(option.Domain, "*.")
+		domains = append(domains, rootDomain)
+	}
+
 	request := certificate.ObtainRequest{
-		Domains: []string{option.Domain},
+		Domains: domains,
 		Bundle:  true,
 	}
 	certificates, err := client.Certificate.Obtain(request)