Merge pull request #3201 from neocturne/selinux-container

scripts/container.sh: fix rootless Podman on systems with SELinux

scripts/container.sh

@@ -12,7 +12,7 @@ TAG="gluon:${BRANCH:-latest}"
 if [ "$(command -v podman)" ]
 then
 	podman build -t "${TAG}" contrib/docker
-	podman run -it --rm -u "$(id -u):$(id -g)" --userns=keep-id --volume="$(pwd):/gluon" "${TAG}"
+	podman run -it --rm -u "$(id -u):$(id -g)" --userns=keep-id --volume="$(pwd):/gluon:z" "${TAG}"
 elif [ "$(command -v docker)" ]
 then
 	docker build -t "${TAG}" contrib/docker