use buffered channel so goroutine does not get blocked on done <- true when a timeout occurs.

Docker-DCO-1.1-Signed-off-by: Anandkumar Patel <anandkumarpatel@gmail.com> (github: anandkumarpatel)
Fixes some docs issues with using single-dash arguments where they should be double

I found a bunch of issues where we have "-<opt>" instead of "--<opt>".
Also a couple of other issues, like "-notrunc", which is now "--no-trunc"
Fixes #5963

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
Merge pull request #5955 from anandkumarpatel/5923-fix-leaking-go-routine

5923-fix-leaking-go-routine
Merge pull request #5965 from cpuguy83/5963-fix-single-dash-in-working-with-volumes

Fixes some docs issues with using single-dash arguments where they should be double
remove chmod 755: fixes #5941

Docker-DCO-1.1-Signed-off-by: Tibor Vass <teabee89@gmail.com> (github: tiborvass)
for perms checking tests, create files from Go and remove them from git

Docker-DCO-1.1-Signed-off-by: Tibor Vass <teabee89@gmail.com> (github: tiborvass)
Merge pull request #5953 from tiborvass/remove-chmod-755

remove chmod 755: fixes #5941