Docker Installation

Introduction

• Setup Docker on Ubuntu

Prerequisites

• List required tools (e.g., kubectl, kind, minikube, k3d, or a cloud provider like AKS, EKS, GKE).
• Mention OS compatibility and system requirements.

Install Docker on Ubuntu

• Setup Docker’s apt repository

sudo apt-get update
sudo apt-get install ca-certificates curl -y
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

• Install the Docker Packages

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

• Verify the installation

sudo docker run hello-world

Cleanup

• 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-extras

• Remove Images, containers, volumes, or custom configuration files on your host aren’t automatically removed.

sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd

• Remove source list and keyrings

sudo rm /etc/apt/sources.list.d/docker.list
sudo rm /etc/apt/keyrings/docker.asc

Conclusion

• We install Docker using the apt repository and verified the installation.
• We cleaned up the docker installation.