install-docker.md

1.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
gnupg
lsb-release

2.Add Docker’s official GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

3. Use the following command to set up the stable repository.

echo
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

4. Install Docker Engine

sudo apt-get update sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin

5. Verify that Docker Engine is installed correctly by running the hello-world image.

sudo docker run hello-world

6. run docker rootless

Use systemctl --user to manage the lifecycle of the daemon: systemctl --user start docker

To launch the daemon on system startup, enable the systemd service and lingering: systemctl --user enable docker sudo loginctl enable-linger $(whoami)

docker context use rootless OR export DOCKER_HOST=unix://$XDG_RUNTIME_DIR/docker.sock THEN docker ps