How to Install Docker CE on Ubuntu 18.04

Updated by Linode Written by Linode

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These steps install Docker Community Edition (CE) using the official Ubuntu repositories. To install on another distribution, see the official installation page.

  1. Remove any older installations of Docker that may be on your system:

    sudo apt remove docker docker-engine docker.io
    
  2. Make sure you have the necessary packages to allow the use of Docker’s repository:

    sudo apt install apt-transport-https ca-certificates curl software-properties-common
    
  3. Add Docker’s GPG key:

    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
    
  4. Verify the fingerprint of the GPG key:

    sudo apt-key fingerprint 0EBFCD88
    

    You should see output similar to the following:

      
    pub   4096R/0EBFCD88 2017-02-22
            Key fingerprint = 9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
    uid                  Docker Release (CE deb) 
    sub   4096R/F273FCD8 2017-02-22
    
    
  5. Add the stable Docker repository:

    sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
    
    Note
    For Ubuntu 19.04 if you get an E: Package 'docker-ce' has no installation candidate error this is because the stable version of docker for is not yet available. Therefore, you will need to use the edge / test repository.
    sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable edge test"
    
  6. Update your package index and install Docker CE:

    sudo apt update
    sudo apt install docker-ce
    
  7. Add your limited Linux user account to the docker group:

    sudo usermod -aG docker $USER
    
    Note
    After entering the usermod command, you will need to close your SSH session and open a new one for this change to take effect.
  8. Check that the installation was successful by running the built-in “Hello World” program:

    docker run hello-world
    

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This guide is published under a CC BY-ND 4.0 license.