Add option for self-signed certificates for DOCKER_HOST over TLS

[dekobon]

With docker you can specify a Docker host that listens exclusively with TLS. Then you can use the parameter --tls and the environment variable DOCKER_CERT_PATH to connect to a Docker host with self-signed certificates.

However, when using Docker compose, you can't connect to a host using self-signed certs because the only option to enable TLS based Docker hosts is DOCKER_TLS_VERIFY and that environment variable has TLS verify baked into it. I need something more like a vanilla DOCKER_TLS environment variable or a CLI parameter that is equivalent of "docker --tls"

[eviking]

+1

[jgrowl]

+1

[dnephin]

compose supports http://docs.docker.com/compose/reference/overview/#docker-cert-path now