# Update the apt package index

sudo apt-get update

​

# Install packages to allow apt to use a repository over HTTPS

sudo apt-get install -y \

    apt-transport-https \

    ca-certificates \

    curl \

    gnupg-agent \

    software-properties-common

​

# Add Docker's official GPG key

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

​

# Add Docker's stable repository

echo \

  "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \

  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

​

# Update the apt package index again

sudo apt-get update

​

# Install the Docker CLI

sudo apt-get install -y docker-ce-cli

docker version