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How do I install docker on Ubuntu Linux?

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Installing Docker on Ubuntu Linux involves a few steps to ensure that the installation is successful. This guide will walk you through the process of installing Docker on Ubuntu Linux.
  1. 1

    Update package index

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    Before installing Docker, it is recommended to update the package index to ensure you have the latest version available.
    sudo apt update
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  2. 2

    Install necessary packages

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    Install the necessary packages that allow apt to use a repository over HTTPS.
    sudo apt install apt-transport-https ca-certificates curl software-properties-common
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  3. 3

    Add Docker's official GPG key

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    Add Docker's official GPG key to ensure the integrity and authenticity of the software packages.
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
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  4. 4

    Set up the stable repository

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    Set up the stable repository for Docker.
    sudo add-apt-repository 'deb [arch=amd64] https://download.docker.com/linux/ubuntu <$(lsb_release -cs)> stable'
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  5. 5

    Install Docker Community Edition

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    Install Docker CE (Community Edition) using the apt package manager.

    sudo apt update sudo apt install docker-ce
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  6. 6

    Verify Docker installation by running a container

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    Verify that Docker has been successfully installed by running a simple hello-world container.

    sudo docker run hello-world
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