fix(dao/runner): remove duplicate key column hostname in OnConflict c…

…lause

dao/runner.go

@@ -38,7 +38,7 @@ func (d runnerDao) Get(c context.Context, id uint) (res model.Runner, err error)
 // Create a Runner.
 func (d runnerDao) Create(c context.Context, it *model.Runner) error {
 	return d.db.WithContext(c).Clauses(clause.OnConflict{
-		Columns:   []clause.Column{{Name: "hostname"}, {Name: "hostname"}}, // key column
+		Columns:   []clause.Column{{Name: "hostname"}}, // key column
 		DoUpdates: clause.AssignmentColumns([]string{"port"}),              // column needed to be updated
 	}).Create(it).Error
 }