Insights into Dockers and Containers !

Docker Inception

Installation : 

Docker requires 64 bit installation. First we can go ahead and create a Docker repository in the etc/yum.repos.d folder (be aware I am demonstrating this on a CentOS). Give the appropriate base URLs, gpgkeys etc

Do a sudo yum -y install docker-engine to install docker.

Then you need to enable docker using sudo systemctl enable docker and also start the docker daemon service.

Now that you have installed docker, you would have observed a thing that in order to run the Docker images command you have to be a root user (sudo). this is because you current user must not have been added to the docker group.This because we need to connect to the "docker.sock" file which is owned by root and belongs to the "docker" user group.

Like Git, we have repos for docker too. The common place to use docker images is from Docker Hub.

Go ahead n create an account on hub.docker.com. Its similar to Chef Marketplace. One place for public and private docker images.

Remember base images do not run, we need to create a container with all configurations. All base images are based upon a docker file.

Watch out for this space ! Much more incoming.