tests: use .travis.yml to test the demo container
tests: use .travis.yml to test the demo container

JrCs/ceph-docker,osixia/ceph-docker,osixia/ceph-docker,JrCs/ceph-docker,ceph/ceph-docker,cdxvirt/ceph-docker,AcalephStorage/ceph-docker,AcalephStorage/ceph-docker,rootfs/ceph-docker,mkkie/ceph-docker,JrCs/ceph-docker,osixia/ceph-docker,rootfs/ceph-docker,cdxvirt/ceph-docker,ceph/ceph-docker,mkkie/ceph-docker,AcalephStorage/ceph-docker