I recently installed storj in virtualbox, on a mint 18.3 (=> ubuntu 18.04), and I had a problem with docker installation.
On my distribution, according to the docker tutorial indicated on the storj documentation, there is two way for the installation.
Like docker wasn’t in the depot on my distribution, I used “Install using the repository”.
But I had a systematic error after the “sudo apt-get update” :
“The dépôt https://download.docker.com/linux/ubuntu sylvia Release haven’t release file”
The problem was coming from “sylvia” : it’s a mint distribution name, not an ubuntu distribution name.
Explication : bionic is the ubuntu name version on which is based mint sylvia.
if sometimes someone else had the same problem, that’s the solution.