Using `dpkg --print-architecture` instead of the `uname -m` to abstract the architecture value from the container images, which the build process is running inside, to match exactly the behavior specified by the following Docker file while not 'passthru' to the host. Signed-off-by: Dennis Chen <dennis.chen@arm.com> Upstream-commit: 803a756941f5e4b68429a3642d52585c8ea6dbaa Component: engine