How to install Docker in Ubuntu 18.04 LTS

docker.sh

# Youtube: https://www.youtube.com/watch?v=n55rKz4lCg4&t=11s
#!/bin/sh

# Update the apt package index:
$ sudo apt-get update

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

$ sudo apt-get install \
    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 apt-key add -

# Verify that you now have the key with the fingerprint
$ sudo apt-key fingerprint 0EBFCD88

# Use the following command to set up the stable repository. 
$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
   
# Update the apt package index.
$ sudo apt-get update

# Install the latest version of Docker Engine
$ sudo apt-get install docker-ce docker-ce-cli containerd.io

# Check docker version 
$ sudo docker -v

# Verify that Docker Engine - Community is installed correctly by running the hello-world image.
$ sudo docker run hello-world

$ sudo docker images
$ sudo docker ps -a