Health check does not work with Docker Machine 1.6 on boot2docker

[maxekman]

The Docker Remote API used by Docker 1.10 requires HTTPS, which makes the health check fail:

2016/02/11 09:36:29 Pull aborted: 192.168.99.100:2376 does not appear to be running Docker

When running with -disable-checks pull images works normally.

See: https://docs.docker.com/engine/reference/api/docker_remote_api/#using-docker-machine-with-the-api

[relistan]

I have this working by specifying the full host with port. Are you still unable to get this running? There are other compatibility issues with 1.10 for sure, though, so fixing this won't solve that. See #108