比如我們想以root用戶登錄 oracle數(shù)據(jù)庫 docker，結(jié)果報以下錯誤：
$ sudo docker exec -it -u root 9e847654f0b6 bash
OCI runtime exec failed: exec failed: container_linux.go:348: starting container process caused "chdir to cwd (\"/home/oracle\") set in config.json failed: permission denied": unknown
解決辦法：

# docker exec -w /home/oracle -it?9e847654f0b6?chmod 777 /home/oracle

之后，就可以登錄root用戶了。