kas-docker: Podman: Fixing isar builds failing with exec format errors

When trying to run kas-docker with --isar on podman the build fails
with some "exec format" errors when the target has a different
architecture than the host. The reason is that /proc/sys/fs/binfmt_misc
is not mounted as expected inside the container.

The way the /proc filesystem is mounted seems to differ between podman
and docker. See [1] for the podman issue tracker. This is a temporary
fix and should be removed when the upstream issue was resolved.

[1] https://github.com/containers/podman/issues/4725

Signed-off-by: Florian Bezdeka <florian@bezdeka.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

kas-docker

@@ -116,6 +116,7 @@ while [ $# -gt 0 ]; do
 		podman)
 			# sudo is needed for a privileged podman container
 			DOCKER_COMMAND="sudo ${DOCKER_COMMAND}"
+			ISAR_ARGS="${ISAR_ARGS} --pid=host"
 			;;
 		esac