# To add the edge or test repository, add the word edge or test (or both) after the word stable in the commands below. Like this:

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable edge test"

Next, update the package database with the Docker packages from the newly added repo:

sudo apt-get update
apt-cache policy docker-ce