Trying to start Docker daemon about coffer

[f-prime]

You are trying to start Docker from within Coffer? This isn't something I have ever tried so I don't really know what would be going on here. If it's trying to get /var/lib/docker then that /var/lib/docker should be within the chroot. Do you think it's trying to access the /var/lib/docker that is outside of the chroot?

[makamekm]

Maybe it's because it tries to use set gid and uid, after rejection it writes this message. Almost the same error with sshd.

[f-prime]

Okay, so do you think this is a Coffer problem or a Docker problem, or just some kind of user error?

[makamekm]

I have solved this problem using udocker. But there is the error in fakeroot. You can try it by running "changeuser - user"