Install Docker Community Edition on CentOS7

# Install Docker Community Edition on CentOS7

# Install docker dependencies and daemon

sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2

sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

sudo yum install docker-ce

# Set Docker to start on boot

sudo systemctl enable docker

# Add a non-root user to the Docker group

sudo usermod -aG docker guser # guser is my user in this case

# UPGRADE DOCKER CE
# To upgrade Docker CE, download the newer package file and repeat the installation procedure, using yum -y upgrade instead of yum -y install, and pointing to the new file.

# Test Docker is working

sudo docker run hello-world

# Install Docker compose

sudo yum install epel-release

sudo yum install -y python-pip

sudo pip install docker-compose

sudo yum upgrade python*

docker-compose -v

# Disable the firewall

systemctl disable firewalld