Disclaimer

Keep in mind that there are multiple ways to setup and install Docker in your system. It is best to refer to the official Docker installation guideline. In this tutorial, we will present an installation example on Ubuntu Linux with the apt package manager.

Installing Docker

Before installing the Docker Engine, you will need to set up the Docker repository:

1. In the Ubuntu’s terminal window, update the apt package index and install packages that allow apt to use a repository over HTTPS:

    apt-get update && apt-get install ca-certificates curl gnupg
   

2. Add Docker’s official GPG key:

    install -m 0755 -d /etc/apt/keyrings
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
    chmod a+r /etc/apt/keyrings/docker.gpg
   

3. Use the following command to set up the repository:

    echo \
    "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
    "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
    sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
    apt-get update
   

Next, to install the Docker Engine, containerd and Docker Compose, simply run the following command:

apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin