Keep the / in the DEPLOY_REGISTRY, so we can just set it empty to use the default docker registry.
Keep the / in the DEPLOY_REGISTRY, so we can just set it empty to use the default docker registry.

deviceMP/resin-supervisor,nghiant2710/resin-supervisor,nghiant2710/resin-supervisor,deviceMP/resin-supervisor,resin-io/resin-multivisor