How to install and setup Docker on RHEL 7/CentOS 7

To install and setup Docker on RHEL 7/CentOS 7:

1. Update the system:

$ sudo yum update

1. Add the Docker CE repository:

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

1. Install Docker CE:

$ sudo yum install docker-ce

1. Start Docker and enable it to start at boot:

$ sudo systemctl start docker
$ sudo systemctl enable docker

1. Verify Docker installation by running the hello-world image:

$ sudo docker run hello-world

After successful installation, you can use the docker command to interact with the Docker engine.