move dependencies to vendor

vendor/github.com/opencontainers/runc/libcontainer/setns_init_linux.go

@@ -0,0 +1,35 @@
+// +build linux
+
+package libcontainer
+
+import (
+	"os"
+
+	"github.com/opencontainers/runc/libcontainer/apparmor"
+	"github.com/opencontainers/runc/libcontainer/label"
+	"github.com/opencontainers/runc/libcontainer/system"
+)
+
+// linuxSetnsInit performs the container's initialization for running a new process
+// inside an existing container.
+type linuxSetnsInit struct {
+	config *initConfig
+}
+
+func (l *linuxSetnsInit) Init() error {
+	if err := setupRlimits(l.config.Config); err != nil {
+		return err
+	}
+	if err := finalizeNamespace(l.config); err != nil {
+		return err
+	}
+	if err := apparmor.ApplyProfile(l.config.Config.AppArmorProfile); err != nil {
+		return err
+	}
+	if l.config.Config.ProcessLabel != "" {
+		if err := label.SetProcessLabel(l.config.Config.ProcessLabel); err != nil {
+			return err
+		}
+	}
+	return system.Execv(l.config.Args[0], l.config.Args[0:], os.Environ())
+}