// We lock the provider to virtualbox because the Vagrantfile specifies lots of boxes that only work
        // properly in virtualbox. Virtualbox is vagrant's default but its possible to change that default and folks do.
        execute(spec -> {
            spec.setCommand("up");
            spec.setArgs("--provision", "--provider", "virtualbox");
        });
        isVMStarted = true;
    }

                    .filter(t -> t instanceof VagrantShellTask)
                    .filter(t -> t.getProject() == project)
                    .count()
            );
    }

    /**
     * Check vagrant and virtualbox versions, if any vagrant test tasks will be run.
     */
    static class VagrantSetupCheckerPlugin implements Plugin<Project> {

VM running trusty by running
`vagrant up ubuntu-1804 --provider virtualbox && vagrant ssh ubuntu-1804`.

=== Testing packaging on Windows

The packaging tests also support Windows Server 2012R2 and Windows Server 2016.
Unfortunately we're not able to provide boxes for them in open source use
because of licensing issues. Any Virtualbox image that has WinRM and Powershell
enabled for remote users should work.

There is also a new way to run bleeding edge Windows features from scratch by compiling the windows kubelet and kube-proxy, then using them along with daily builds of other Kubernetes components.