我正在运行安装了Ubuntu 16.04的vServer。所有套餐似乎都是最新的。我的内核版本如下：Linux 4.4.0-042stab130.1 x86_64。
我想安装docker-ce用于开发目的。现在，每当我尝试通过apt安装它时，它都会崩溃，因为它无法启动docker。
journalctl -u docker向我显示以下错误消息：
level=error msg="'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded.
level=warning msg="Your kernel does not support oom control
level=warning msg="Your kernel does not support memory swappiness
level=warning msg="Your kernel does not support kernel memory limit
level=warning msg="Unable to find cpu cgroup in mounts
level=warning msg="Unable to find cpuset cgroup in mounts
level=warning msg="mountpoint for pids not found
Error starting daemon: Devices cgroup isn't mounted
因此，我对overlay或overlay2提供的功能没有任何经验。我几乎没有读过它，它应该被Linux内核支持为版本4及更高版本。
我不知道该怎么做，让码头工作。
提前感谢您的帮助。