Install Docker on CentOS 7: Step-by-Step Guide

1 year ago
Benjamin Taylor
2 minutes

Installing and setting up Docker containers on CentOS 7 is very simple, just follow the steps below:

  1. Install Docker Community Edition (CE)

Firstly, update the software package list of the system.

sudo yum update

Next, install the dependencies for Docker CE.

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

Install the official repository for Docker CE.

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Install Docker CE:

sudo yum install docker-ce
  1. Start the Docker service.

After installation is complete, start the Docker service and enable it to start automatically on boot.

sudo systemctl start docker
sudo systemctl enable docker
  1. Validate Docker installation

Run the following command to verify if Docker has been successfully installed:

sudo docker --version
  1. Set up Docker containers.

You can configure a Docker container by writing a Dockerfile, which defines the image’s build process, environment variables, dependencies, and more.

To start with, if you want to create a simple Nginx container, first make a Dockerfile.

mkdir mynginx
cd mynginx
touch Dockerfile

Add the following content to the Dockerfile:

FROM nginx:latest

COPY index.html /usr/share/nginx/html/index.html

Then build the image:

sudo docker build -t mynginx .

Finally, run the container.

sudo docker run -d -p 80:80 mynginx

These are the steps to install and configure Docker containers on CentOS 7. I hope it helps you.

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