How to Install Docker on RHEL and Ubuntu

WHAT TO EXPECT

In this section, users will learn how to install docker for either RHEL or Ubuntu. For a more detailed instructions, see their respective pages on the Docker documentation site:

• Ubuntu: https://docs.docker.com/engine/install/ubuntu/

• RHEL: https://docs.docker.com/engine/install/rhel/

Installing Docker on RHEL

1. Run the following command to prepare the repositories for the docker install:

   sudo dnf config-manager --add-repo https://download.docker.com/linux/rhel/docker-ce.repo
   cat /etc/yum.repos.d/docker-ce.repo
   sudo sed -i 's/$releasever/9/g' /etc/yum.repos.d/docker-ce.repo
   cat /etc/yum.repos.d/docker-ce.repo
   sudo dnf -y install dnf-plugins-core

2. Install Docker:

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

3. Continue on to Enabling Docker.

Installing Docker on Ubuntu

1. Install Docker:

   curl https://get.docker.com/ > dockerinstall && chmod 777 dockerinstall && sudo ./dockerinstall

2. Continue on to Enabling Docker.

Enabling Docker

After installing Docker on either RHEL or Ubuntu, run the following commands to enable it on your machine:

sudo usermod -aG docker $USER
sudo systemctl enable docker
sudo systemctl start docker