linux - Docker mount a volume as root -

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the problem description

i have docker image, being executed volume mounting options large number of times. built in way default user not have root permissions. need make sure when mount volume being mounted root , not current working user because of security concerns. (the current working non-root user must not allowed delete files inside mounted volume.)

example

from host machine:

docker run -it -v /path/to/mount:/container/mounting/path image-name

inside container current-user@docker-container:

all of files inside /container/mounting/path must have owner permissions root root , not current-user current-user.

just make sure permissions on /path/to/mount set root:root , should good.

like example, i'm mounting /sbin has root:root permissions on local machine.

current-user@hostmachine:/sbin$ docker run -it -v /sbin:/home/sbin centos:6.6 /bin/bash [root@e9e21b0f36c7 /]#  [root@e9e21b0f36c7 ~]# adduser current-user [root@e9e21b0f36c7 ~]# su current-user - [current-user@e9e21b0f36c7 root]$ cd [current-user@e9e21b0f36c7 home]$ cd sbin [current-user@e9e21b0f36c7 sbin]$ touch file touch: cannot touch `file': permission denied [current-user@e9e21b0f36c7 sbin]$

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