Before reading the configuration of a docker machine, the machine shall
be created and started. Otherwise, the docker command will complain
about "cannot connect to the Docker daemon".
If the docker machine has not been created, the make check will be
immediately terminated, and then print the error message. If its status
is not running, the machine will be turned on by a start command.
Change-Id: I7f4c322e7bdf29e4e4203e0e1bbc2e5c8cf677be
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>