After finding our initial thinking on env. space versus arg list space was wrong, we need to solve this by using a pipe between the caller and child to marshall the (potentially very large) options array to the archiver. Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp) Upstream-commit: 908db51804635ce002e97e4efb867f7352204f8e Component: engine