contrib: use the right package name on arm64 for docker
contrib: use the right package name on arm64 for docker

docker package is called docker.io not docker-ce

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

ceph/ceph-docker,ceph/ceph-docker