Installation

Ubuntu 22/24 APT

# Update existing packages 🔄

sudo apt update

• Update only updates the package list, while upgrade installs new package versions.

• It ensures your local package cache is up-to-date with the repositories.

# Install prerequisite packages for HTTPS access 🔒

sudo apt install apt-transport-https ca-certificates curl software-properties-common

# Add GPG key for the Docker repository 🔑

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

# Add Docker repository to APT sources ⬇️

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

allow you to install Docker from Docker’s official repository instead of Ubuntu’s default repository.

# Update package list for the repository addition to take effect 🔄

sudo apt update

# Check Docker candidate version ⚙️

apt-cache policy docker-ce

# Install Docker 🐳

sudo apt install docker-ce

# Check Docker status 🚀

sudo systemctl status docker

# Check Docker Version 📋

docker --version

# Check Docker compose version

docker compose version

# Run a Test Application 🧪

sudo docker run hello-world

REDHAT DNF

Install the dnf-plugins-core package (which provides the commands to manage your DNF repositories) and set up the repository.

sudo dnf -y install dnf-plugins-core

sudo dnf config-manager --add-repo https://download.docker.com/linux/rhel/docker-ce.repo

sudo dnf install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

systemctl status

docker --version

docker run hello-world

CentOS 7 YUM

update packages

sudo yum update

sudo yum check-update

installing essential dependencies

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

Add official Docker repository

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

install docker

sudo yum install docker-ce

sudo systemctl start docker

sudo systemctl enable docker

to manage docker without sudo add user to docker group

sudo usermod -aG docker <your_username>