How to Installing Docker on ALMA Linux, Ubuntu, and Centos

Docker has revolutionized the way software is packaged, deployed, and managed, offering a lightweight and efficient solution for containerization. Installing Docker on popular Linux distributions like ALMA Linux, Ubuntu, and CentOS 7 is a straightforward process that empowers users to leverage the benefits of containerized applications. In this guide, we’ll walk through the installation steps for Docker on each of these platforms.

1. Installing Docker on ALMA Linux:

• Update Package Repositories: Start by updating the package repositories to ensure you have access to the latest versions of software packages.
  sudo dnf update

• Install Docker Dependencies: Install the required dependencies for Docker.
  sudo dnf install -y dnf-plugins-core

• Add Docker Repository: Add the Docker repository to your system.
  sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

• Install Docker Engine: Finally, install Docker Engine using the following command.
  sudo dnf install docker-ce docker-ce-cli containerd.io

• Start and Enable Docker Service: Start the Docker service and enable it to start on boot.
  sudo systemctl start docker
sudo systemctl enable docker


2. Installing Docker on Ubuntu:

• Update Package Repositories: Update the package repositories to ensure you have the latest package information.
  sudo apt update

• Install Docker Dependencies: Install the necessary dependencies for Docker installation.
  sudo apt install -y apt-transport-https ca-certificates curl software-properties-common

• Add Docker GPG Key: Add Docker’s official GPG key to verify packages.
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

• Add Docker Repository: Add the Docker repository to your system.
  sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

• Install Docker Engine: Install Docker Engine using the following command.
  sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io

• Start and Enable Docker Service: Start the Docker service and enable it to start on boot.
  sudo systemctl start docker
sudo systemctl enable docker


3. Installing Docker on CentOS 7:

• Update Package Repositories: Update the package repositories using the following command.
  sudo yum update

• Install Docker Dependencies: Install the required dependencies for Docker.
  sudo yum install -y yum-utils device-mapper-persistent-data lvm2

• Add Docker Repository: Add the Docker repository to your system.
  sudo yum-config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

• Install Docker Engine: Finally, install Docker Engine using the following command.
  sudo yum install docker-ce docker-ce-cli containerd.io

• Start and Enable Docker Service: Start the Docker service and enable it to start on boot.
  sudo systemctl start docker
sudo systemctl enable docker


After completing these steps, Docker should be successfully installed on your ALMA Linux, Ubuntu, or CentOS 7 system. You can now start using Docker to containerize and manage your applications efficiently. Remember to consult the official Docker documentation for further configuration and usage instructions.