Script for installing Docker Engine, Compose, and Swarm on RHEL 7.2

DockerRHEL7Install.sh

#!/bin/bash

#### CHANGE DOCKER ROOT DIRECTORY ####
# For Azure VM edit vi /lib/systemd/system/docker.service to add the -g flag to the directory that you want be the Docker root directory
# systemctl daemon-reload
# systemctl restart docker

#### REDHAT 7 STOPPING FIREWALLD ####
# service firewalld stop
# systemctl disable firewalld

# One Liner for running this script is ....
# wget -O - https://gist.githubusercontent.com/jdye64/d04d09f35bd20ae8cd38ef944ce140ca/raw/d2e4c703116b2d039fcc8834f1b6ad43db81febd/DockerRHEL7Install.sh | sudo bash

sudo yum update -y

sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF

sudo yum install -y docker-engine

sudo systemctl enable docker.service

sudo systemctl start docker

sudo groupadd docker

sudo usermod -aG docker jeremy
sudo usermod -aG docker centos

sudo systemctl enable docker

sudo curl -L "https://github.com/docker/compose/releases/download/1.12.0/docker-compose-$(uname -s)-$(uname -m)" > /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

# place docker-compose on the PATH
echo -e "\n\nPATH=$PATH:/usr/local/bin\nexport PATH" >> ~/.bash_profile
source ~/.bash_profile

docker-compose --version

mkdir -p /etc/systemd/system/docker.service.d

echo -e "[Service]\n
ExecStart=\n
ExecStart=/usr/bin/dockerd --storage-opt dm.basesize=100G" >> /etc/systemd/system/docker.service.d/docker.conf