To restart Docker run: $ sudo systemctl restart docker To enable Docker to start automatically every time on system startup, run the command: $ sudo systemctl enable docker If, for any reason, Docker is not running, simply execute the following command: $ sudo systemctl start docker To verify this, run the command: $ sudo systemctl status docker To verify that Docker is installed, run the command: $ docker versionįrom the output, you can see that we have installed Docker 20.10 which is the latest version of Docker at the time of publishing this guide.īy default, Docker autostarts upon installation. You can now run Docker commands as a regular user without any challenges. $ sudo usermod -aG docker $USER $ newgrp docker This allows you to run docker without invoking sudo. Once the command runs successfully, consider adding the currently logged-in user to the docker group. This installs Docker and all the additional packages, libraries, and dependencies required by Docker and associated packages. $ sudo apt install docker-ce docker-ce-cli containerd.io -y With the GPG key and the repository added, run the following command to install Docker and associated packages. $ sudo add-apt-repository "deb focal stable" Since Ubuntu 22.04 is yet to be officially released, add the repository for Ubuntu 20.04 Stable. Once added, add the Docker repository as follows. To do so, we will add the GPGK key $ curl -fsSL | sudo apt-key add.
We will install the Docker Community Edition ( Docker CE ) which is opensource and free to download and use. With the requirements installed, the next step is to install Docker. Once the dependencies have been installed, proceed to the next step. Therefore, run the following command to install them: $ sudo apt install apt-transport-https curl gnupg-agent ca-certificates software-properties-common -y Some dependencies are needed for the installation to go along seamlessly. To do so, run the command: $ sudo apt update The first step is to refresh the repositories. In this guide, we focus on how to install Docker on Ubuntu 22.04.
Containers are isolated environments that package an entire application alongside its dependencies, libraries, configuration files, and everything required to make it run regardless of the computing environment. Docker is a hugely popular containerization platform that enables developers to build and deploy applications inside containers.
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