Allow an SSHDomain configuration option. Defaults to Domain, preserves legacy behavior

models/repo.go

 	if err = repo.GetOwner(); err != nil {
 		return cl, err
 	}
+
 	if setting.SSHPort != 22 {
-		cl.SSH = fmt.Sprintf("ssh://%s@%s:%d/%s/%s.git", setting.RunUser, setting.Domain, setting.SSHPort, repo.Owner.LowerName, repo.LowerName)
+		cl.SSH = fmt.Sprintf("ssh://%s@%s:%d/%s/%s.git", setting.RunUser, setting.SSHDomain, setting.SSHPort, repo.Owner.LowerName, repo.LowerName)
 	} else {
-		cl.SSH = fmt.Sprintf("%s@%s:%s/%s.git", setting.RunUser, setting.Domain, repo.Owner.LowerName, repo.LowerName)
+		cl.SSH = fmt.Sprintf("%s@%s:%s/%s.git", setting.RunUser, setting.SSHDomain, repo.Owner.LowerName, repo.LowerName)
 	}
 	cl.HTTPS = fmt.Sprintf("%s%s/%s.git", setting.AppUrl, repo.Owner.LowerName, repo.LowerName)
 	return cl, nil

modules/setting/setting.go

 	HttpAddr, HttpPort string
 	DisableSSH         bool
 	SSHPort            int
+	SSHDomain          string
 	OfflineMode        bool
 	DisableRouterLog   bool
 	CertFile, KeyFile  string
 	HttpAddr = sec.Key("HTTP_ADDR").MustString("0.0.0.0")
 	HttpPort = sec.Key("HTTP_PORT").MustString("3000")
 	DisableSSH = sec.Key("DISABLE_SSH").MustBool()
+	SSHDomain = sec.Key("SSH_DOMAIN").MustString(Domain)
 	SSHPort = sec.Key("SSH_PORT").MustInt(22)
 	OfflineMode = sec.Key("OFFLINE_MODE").MustBool()
 	DisableRouterLog = sec.Key("DISABLE_ROUTER_LOG").MustBool()