Fixes: #18872 For backup, restore case, we usually restore in same directory, so when we untar it, we not need go to /dbdata directory, wich could result in /dbdata/dbdata, this fix make it untar directly. The directory /dbdata would be same as old container /dbdata. Signed-off-by: Kai Qiang Wu(Kennan) <wkqwu@cn.ibm.com> Upstream-commit: 83c705c00d9be3d5064a7a3fcc5de0645fce21b1 Component: engine