How To Install and Use Docker on Ubuntu 20.04
curl -fsSL https://get.docker.com -o get-docker.sh
chmod +x get-docker.sh
sudo ./get-docker.sh
sudo usermod -aG docker ${USER}
su - ${USER}
groups
docker --version
How To Install and Use Docker Compose on Ubuntu 20.04
github.com/docker/compose/releases
version=($(uname -s)-$(uname -m)) && sudo curl -L "https://github.com/docker/compose/releases/download/v2.6.0/docker-compose-${version,,}" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version