How to Install Docker in Linux?

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How to Install Docker in Linux?

Note – You should install Docker using root or with sudo access.

Install Docker on Ubantu

# apt-get update

# apt-get install -y docker.io

# service docker.io start

Install Docker on Redhar / Centos

# yum update

# yum install -y docker.io

# systemctl start docker.service

How to verify the version of docker?

# docker -v

# docker version

How to know docker running?

# service docker.io status (Ubantu)

# systemctl status docker.service (Redhat)

How to check details of Docker clients, deamon, containers, images, drivers, etc

# docker info

How to update Docker version?

==============================================

# wget -q0- https://get.docker.com/gpg | apt-key add –

# echo deb http://get.docker.com/ubantu docker main > /etc/apt/sources.list.d/docker.list

# apt-get update

# apt-get install lxc-docker

# docker version

Configuration post docker installation:

Adding Users to the Docker Group for non-root user

==============================================

# docker run -it ubuntu /bin/bash (as a non-root)

[ permission denied]

# cat /etc/group

# sudo gpasswd -a username docker

# cat /etc/group

# docker run -it ubuntu /bin/bash (as a non-root)

# logout

# login username

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