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Install Docker on EC2

1) Launch EC2 instance , the one with docker support on it 

2) Then follow simple below 4 instructions  

Update yum for any package 
The install docker 
then start the docker service 
register the ec2-user in docker sudo group to execute commands without sudo permission 

a) sudo yum update -y 
b) sudo yum install -y docker
c) sudo service docker start
d) sudo usermod -a -G docker ec2-user

you can verify the  docker installation by running some sample docker commands like 
docker image ls 
docker ps 

reboot the system to take an effect of sudo group

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