如何更改docker中已装入卷的传播

Question

"Mounts": [
        {
            "Source": "/home/ec2-user/selenium-downloads",
            "Destination": "/home/seluser/Downloads",
            "Mode": "",
            "RW": true,
            "Propagation": "rprivate"
        }
 ],

我如何改变传播？我需要它为空，以便我的docker容器可以直接到安装目录。