var-lib-containers.ign

{
    "ignition": {
        "config": {},
        "security": {
            "tls": {}
        },
        "timeouts": {},
        "version": "2.2.0"
    },
    "networkd": {},
    "passwd": {
        "users": [
            {
                "name": "core",
                "groups": [
                    "sudo",
                    "wheel"
                ],
                "sshAuthorizedKeys": [
                    "ssh-rsa AAAAB3... jlebon@lux"
                ]
            }
        ]
    },
  "storage": {
    "disks": [
      {
        "device": "/dev/vdb",
        "wipeTable": true,
        "partitions": [
          {
            "label": "CNTNR",
            "sizeMiB": "0",
            "startMiB": "0",
            "wipePartitionEntry": true
          }
        ]
      }
    ],
    "filesystems": [
      {
        "mount": {
          "device": "/dev/vdb1",
          "format": "xfs",
          "label": "CNTNR",
          "wipeFilesystem": true
        }
      }
    ]
  },
    "systemd": {
     "units": [
       {
        "name": "var-lib-containers.mount",
        "enabled": true,
        "contents": "[Mount]\nWhat=/dev/vdb1\nWhere=/var/lib/containers\nType=xfs\nOptions=defaults\n[Install]\nWantedBy=local-fs.target"
       }]
   }
}