fix: support image push when using Rancher Desktop locally (#251)

Rancher Desktop is a free alternative to Docker Desktop (which prohibits
commercial use) and has gained significant popularity. When running
Rancher Desktop on non-native Docker platforms such as macOS and
Windows, the secondary tunnel from the host OS to the Docker's Linux
machine is necessary. At the moment, the check for this seems to be
based on the vhost name of the docker engine's VM.

For Rancher Desktop it seemms to be `lima-rancher-desktop`:

  $ docker info --format 'json' | jq .Name

This might not be the best approach but is simple and should save a lot
of headaches for a lot of people until a potentially better solution is
devised.

See also: https://github.com/psviderski/unregistry/issues/62

pkg/client/image.go

@@ -370,7 +370,7 @@ func isDockerVirtualised(ctx context.Context, dockerCli *docker.Client) (bool, e
 		return false, fmt.Errorf("get Docker info: %w", err)
 	}
 
-	virtualisedHostnames := []string{"docker-desktop", "colima"}
+	virtualisedHostnames := []string{"docker-desktop", "colima", "lima-rancher-desktop"}
 	for _, name := range virtualisedHostnames {
 		if strings.Contains(strings.ToLower(info.Name), name) {
 			return true, nil