Also use pipes for non tty so that the parent's tty of the nsinit
process does not leak into the conatiner.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This adds a new env var for identifying the internal sync pipe that
libcontainer uses to sync with the container and parent process. This
replaces #496 to allow the user to add additional files to the processes
and not take over fd 3 for all containers.
Closes#496
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Michael Crosby
Alexander Morozov