Il faut tout d'abord installer Docker :

$ sudo apt update
 
$ sudo apt install apt-transport-https ca-certificates software-properties-common curl
 
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK
 
$ sudo add-apt-repository \
    "deb [arch=armhf] https://download.docker.com/linux/ubuntu \
    $(lsb_release -cs) \
    stable"
 
$ sudo apt update 
 
$ sudo apt install docker-ce
 
$ docker --version
Docker version 18.06.1-ce, build e68fc7a