Install Docker on Ubuntu Using Default Repositories Step 1: Update Software Repositories It’s a good idea to update the local database of software to make sure you’ve got access to the latest revisions.
Open a terminal window and type:
sudo apt-get update
Allow the operation to complete.
Step 2: Uninstall Old Versions of Docker Next, it’s recommended to uninstall any old Docker software before proceeding.
Use the command:
sudo apt-get remove docker docker-engine docker.io
Step 3: Install Docker To install Docker on Ubuntu, in the terminal window enter the command:
sudo apt install docker.io
Step 4: Start and Automate Docker The Docker service needs to be setup to run at startup. To do so, type in each command followed by enter:
sudo systemctl start docker
sudo systemctl enable docker