lxcfs-tools/hooks/lxcfs-hook/example/hookspec.json

{
        "prestart": [
        {
                "path": "/var/lib/lcrd/hooks/lxcfs-hook",
                "args": ["lxcfs-hook", "--log", "/var/log/lxcfs-hook.log"],
                "env": []
        }
        ],
        "poststart":[],
        "poststop":[]
}