Initial commit of runc binary

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

run.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/codegangsta/cli"
+	"github.com/opencontainers/runc/libcontainer"
+)
+
+func execContainer(context *cli.Context, spec *LinuxSpec) (int, error) {
+	if len(spec.Processes) != 1 {
+		return -1, fmt.Errorf("runc only supports one(1) process for the container")
+	}
+	config, err := createLibcontainerConfig(spec)
+	if err != nil {
+		return -1, err
+	}
+	rootuid, err := config.HostUID()
+	if err != nil {
+		return -1, err
+	}
+	factory, err := loadFactory(context)
+	if err != nil {
+		return -1, err
+	}
+	container, err := factory.Create(context.GlobalString("id"), config)
+	if err != nil {
+		return -1, err
+	}
+	// ensure that the container is always removed if we were the process
+	// that created it.
+	defer destroy(container)
+	process := newProcess(spec.Processes[0])
+	tty, err := newTty(spec.Processes[0].TTY, process, rootuid)
+	if err != nil {
+		return -1, err
+	}
+	handler := newSignalHandler(tty)
+	defer handler.Close()
+	if err := container.Start(process); err != nil {
+		return -1, err
+	}
+	return handler.forward(process)
+}
+
+func destroy(container libcontainer.Container) {
+	status, err := container.Status()
+	if err != nil {
+		logrus.Error(err)
+	}
+	if status != libcontainer.Checkpointed {
+		if err := container.Destroy(); err != nil {
+			logrus.Error(err)
+		}
+	}
+}