Docker & Docker-compose

Docker: Docker is an open-source project that automates the deployment of applications inside software containers. Docker provides a way to run applications securely isolated in a container, packaged with all its dependencies and libraries.

App architecture is changing from monolithic code bases with waterfall development methodologies to loosely coupled services that are developed and deployed independently.

Installation of Docker on CentOs 7

https://docs.docker.com/engine/installation/linux/docker-ce/centos/#install-using-the-repository

Alternatively, you can use following steps 

Login as non-sudo user

$ wget -qO- https://get.docker.com/ | sh
$ sudo usermod -aG docker $(whoami)

Log out and log in from your server to activate your new groups.

Set Docker to start automatically at boot time:

$ sudo systemctl enable docker.service

Finally, start the Docker service:

$ sudo systemctl start docker.service

Installation of docker-compose

https://docs.docker.com/compose/install/#install-using-pip

Alternatively you can use following commands

Now that you have Docker installed, let’s go ahead and install Docker Compose. First, install python-pip as prerequisite:

$ sudo yum install epel-release
$ sudo yum install -y python-pip

Then you can install Docker Compose:

$ sudo pip install docker-compose

You will also need to upgrade your Python packages on CentOS 7 to get docker-compose to run successfully:

$ sudo yum upgrade python*

Testing Docker and Docker Compose.

https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-compose-on-centos-7#step-3-—-running-a-container-with-docker-compose