Volumes

$ docker volume create --name shiny-data
$ docker -v shiny-data:/srv/shiny-server rocker/shiny

$ docker volume ls
$ docker volume inspect shiny-data
[
    {
        "Name": "shiny-data",
        "Driver": "local",
        "Mountpoint": "/var/lib/docker/volumes/shiny-data/_data",
        "Labels": {},
        "Scope": "local"
    }
]