Docker containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries – anything that can be installed on a server. This guarantees that the software will always run the same, regardless of its environment.
Commands:
sudo apt-get update
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
echo "deb ubuntu-xenial main" | sudo tee /etc/apt/sources.list.d/docker.list
sudo apt-get update
apt-cache policy docker-engine
sudo apt-get install -y docker-engine
sudo systemctl status docker
sudo usermod -aG docker username
sudo docker run hello-world
sudo docker search ubuntu
sudo docker pull ubuntu
sudo docker images
sudo docker run -it ubuntu
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