Set up the repository
Update the apt package index and install packages to allow apt to use a repository over HTTPS:
sudo apt-get update
sudo apt-get install \
ca-certificates \
curl \
gnupgAdd Docker’s official GPG key:
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpgUse the following command to set up the repository:
echo \
"deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
"$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/nullInstall Docker Engine.
First, update the apt package with
sudo apt-get updateThen, Install Docker Engine, containerd, and Docker Compose with the command below
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
Then, Install Docker Compose
sudo apt install docker-composeThen, Verify that the Docker Engine installation is successful by running the hello-world image
sudo docker run hello-world
This command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message and exits.
You have now successfully installed and started Docker Engine. The docker user group exists but contains no users, which is why you’re required to use sudo to run Docker commands.
To uninstall the docker engine run the command below.
sudo apt-get remove docker docker-engine docker.io containerd runcImages, containers, volumes, and networks stored in /var/lib/docker/ aren’t automatically removed when you uninstall Docker. If you want to start with a clean installation, and prefer to clean up any existing data follow the steps below.
Uninstall the Docker Engine, CLI, containerd, and Docker Compose packages
sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extrasImages, containers, volumes, or custom configuration files on your host aren’t automatically removed. To delete all images, containers, and volumes run the commands
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd