driver: basic types startpoint

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

driver/driver.go

@@ -0,0 +1,36 @@
+package driver
+
+import (
+	"context"
+
+	"github.com/moby/buildkit/client"
+	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
+)
+
+type Logger func(*client.SolveStatus)
+
+type Status int
+
+const (
+	Terminated Status = iota
+	Starting
+	Running
+	Stopping
+	Stopped
+)
+
+type Info struct {
+	Status    Status
+	Platforms []specs.Platform
+}
+
+var ErrNotRunning = errors.Errorf("driver not running")
+
+type Driver interface {
+	Bootstrap(context.Context, Logger) error
+	Info(context.Context) (Info, error)
+	Stop(ctx context.Context, force bool) error
+	Rm(ctx context.Context, force bool) error
+	Client() (client.Client, error)
+}