container: call op method right before initial process

This is at a point considered to be already "within" the container. Daemons internal to the container can be started here.

Signed-off-by: Ophestra <cat@gensokyo.uk>

container/initmkdir.go

@@ -27,6 +27,7 @@ func (m *MkdirOp) early(*setupState, syscallDispatcher) error { return nil }
 func (m *MkdirOp) apply(_ *setupState, k syscallDispatcher) error {
 	return k.mkdirAll(toSysroot(m.Path.String()), m.Perm)
 }
+func (m *MkdirOp) late(*setupState, syscallDispatcher) error { return nil }
 
 func (m *MkdirOp) Is(op Op) bool {
 	vm, ok := op.(*MkdirOp)