Allow joining-to-mnt-ns to change the existing mount info? or mounts in spec should be ignored?
"mounts": {
"data": {
"type": "bind",
"source": "/data",
"options": ["rw"]
}
...
}
"linux": {
"namespaces" : [
{
"type": "mount",
"path": "/proc/1234/ns/pid"
}
...
]
...
}