Docker is a popular tool for deploying and managing applications in containers. Containers allow developers to package an application with all of its dependencies and libraries, so it can be run consistently across different environments.

To install Docker on CentOS, follow these steps:

  1. Update the system package index by running sudo yum update.
  2. Install the Docker package by running sudo yum install docker. This will install the latest version of Docker available in the CentOS package repository.
  3. Start the Docker service by running sudo systemctl start docker.
  4. Enable the Docker service to start at boot time by running sudo systemctl enable docker.
  5. Verify that Docker is running by running sudo systemctl status docker. You should see the message “Active: active (running)” and the Docker version number.
  6. To run Docker commands without using sudo, add your user to the docker group by running sudo usermod -aG docker $USER. Log out and log back in for the change to take effect.
  7. Test your Docker installation by running docker run hello-world. This will download and run a simple Docker container that prints a message to the console.

Congratulations, you have successfully installed Docker on CentOS! You can now use Docker to deploy and manage your applications in containers.