installing docker for ubuntu 18.04 code example

Example 1: install docker on ubuntu 18.04

sudo apt install docker-ce
https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04

Example 2: install docker ubuntu 18.04

# First check if there are any updates
sudo apt-get update

# allow apt to use repositories over the HTTPS protocol
sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

# Add docker's official GPG key by executing following command
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

# Add docker's repositories
sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

# update and install docker
sudo apt-get install docker-ce docker-ce-cli containerd.io

Example 3: installer docker ubuntu 18.04

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -