Install and Use Docker on CentOS 7

install_docker.sh

# Install and Docker on CentOS 7
# Reference:
# https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-centos-7

sudo yum check-update
# It will add the official Docker repository, download the latest version of Docker, and install it:
curl -fsSL https://get.docker.com/ | sh

# start the Docker daemon
sudo systemctl start docker

#Verify that it's running:
#sudo systemctl status docker

#make sure it starts as daemond:
sudo systemctl enable docker

# Executing Docker Command Without Sudo (Optional). Re-login is required to make the setting effect.
sudo usermod -aG docker $(whoami)