Quick docker installation reference.

This is a quick reference to the docker installation steps to take, but you can always check the full installation guide on the official docker website.

Set up the repository

  • Older versions of Docker were called docker,, or docker-engine. If these are installed, uninstall them:

    sudo apt-get remove docker docker-engine containerd runc

  • Update the apt package index and install packages to allow apt to use a repository over HTTPS:

    sudo apt-get update
    sudo apt-get install \
        ca-certificates \
        curl \
        gnupg \

  • Add Docker’s official GPG key:

    sudo mkdir -p /etc/apt/keyrings
    curl -fsSL | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

  • Use the following command to set up the stable repository

    echo \
    "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] \
    $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Install Docker Engine

  • Update the apt package index, and install the latest version of Docker Engine and containerd:

    sudo apt-get update
    sudo apt-get install docker-ce docker-ce-cli docker-compose-plugin

  • Verify that Docker Engine is installed correctly by running the hello-world image.

    sudo service docker start
    sudo docker run hello-world

  • Add User to Docker Group

    sudo usermod -aG docker $USER

    you can replace $USER with the name of the user account

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