Docker Hub offers a great deal of free images from its repositories. # dockerĦ. In order to start and run a Docker container, first an image must be downloaded from Docker Hub on your host. This message shows that your installation appears to be working correctly."Ĥ. Now, you can run a few basic Docker commands to get some info about Docker: For system-wide information on Docker # docker infoĥ. To get a list of all available Docker commands type docker on your console. If you can see the below message, then everything is in the right place. To install Docker, the Epel repositories must be enabled on your system by issuing the following command: # yum install epel-releaseĢ. After, Docker package has been installed, start the daemon, check its status and enable it system wide using the below commands: On RHEL/CentOS 7 # systemctl start dockerģ. Finally, run a container test image to verify if Docker works properly, by issuing the following command: # docker run hello-world Install Docker package by issuing the following command with root privileges: Install Docker on RHEL and CentOS 7 # yum install docker Step 1: Install and Configure Dockerġ. Docker binaries are incorporated into RHEL/CentOS 7 extras repositories, the installation process being pretty simple. The processes that run in a Docker container are always isolated from the main host, preventing outside tampering. This type of Linux containers are proven to be fast, portable and secure. We will discuss about Docker, is an open-source lightweight virtualization tool which runs at top of Operating System level, allowing users to create, run and deploy applications, encapsulated into small containers.
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