[CRIU] external mountpoint issue for docker

[Bing X]

Hi, I'm modifying scripts under test/mounts/ext for my docker container
dump.

 But always failed as can't unshared ns.

I attached my changed run.sh, run_ns.sh, run_wait.sh and
/proc/self/mountinfo, please help me take a look on which part is incorrect.

The following is the results of ps -axf
 2537 ?        Ss     0:00 /bin/sh -e /proc/self/fd/9
 2539 ?        Sl     0:14  \_ /usr/bin/docker.io -d
 6010 ?        Ss     0:00      \_ /bin/sh -c /usr/sbin/sshd -D
 6043 ?        S      0:00          \_ /usr/sbin/sshd -D




-- 
Thanks
Bing
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