Make a docker context

def docker_context():
    """Make a docker context"""
    try:
        client = docker.from_env(
              version = "auto"
            , timeout = int(os.environ.get("DOCKER_CLIENT_TIMEOUT", 180))
            , assert_hostname = False
            )

        info = client.info()
        log.info("Connected to docker daemon\tdriver=%s\tkernel=%s", info["Driver"], info["KernelVersion"])
    except (DockerException, APIError) as error:
        raise BadDockerConnection(error=error)

    return client