This is a simple log of how I installed Docker on my laptop running Linux Mint 19.3 (Tricia). I followed the instructions from the official Docker Documentation website. As Linux Mint 19.3 is based on Ubuntu 18.04 LTS (Bionic Beaver), I followed the instructions in the section “Install on Ubuntu”.

The instructions are straight-forward:

# Uninstall any Docker packages
sudo apt remove docker docker-engine containerd runc

# Install packages to allow apt to use a repository over HTTPS
sudo apt update
sudo apt install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \

# Add Docker's official GPG key
curl -fsSL | sudo apt-key add -

# Verify that the key has been added
sudo apt-key fingerprint 0EBFCD88

# Set up the Docker "stable" repository
sudo add-apt-repository \
    "deb [arch=amd64] bionic stable"

# Install Docker Engine
sudo apt update
sudo apt install docker-ce docker-ce-cli

# Allow non-privileged users to run Docker commands
sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker

Check the Docker version:

docker --version
# Output: Docker version 19.03.12, build 48a66213fe

Verify that you can run docker commands without sudo:

docker run hello-world