Answer by Eric for How do I install Docker on Ubuntu 16.04 LTS?

BTW, for Linux Mint(which is based on ubuntu), need to change the release name by hand, after adding the repository.

Sub steps:

• sudo vi /etc/apt/sources.list.d/additional-repositories.list
• According to underling ubuntu versions:
  • Ubuntu 16.04
    Change sarah or other name, to xenial.
  • Ubuntu 18.04
    Change tara or other name, to bionic.