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- email protected # docker run hello-world. Output of above command. As we can see the informational message in above output which confirms docker engine is setup correctly on CentOS 8 / RHEL 8 Server. Let’s move to docker compose installation. Step:4) Install Docker Compose.
- The steps shared here are for the installation of Docker CE on RHEL 7 Linux. Docker is the main dominant container runtime engine used for Development and running of micro-serviced applications in production.
Home » Articles » Linux » Here. Docker: Install Docker on Oracle Linux 8 (OL8) This article demonstrates how to install Docker on Oracle Linux 8 (OL8). RHEL8, and therefore OL8, have switched their focus from Docker and on to Podman for containers, so this installation uses the Docker CE installation from the Docker repository. Install Docker Compose on RHEL 8 / CentOS 8. Follow our separate guide on installation of latest Docker Compose on Linux. Install Docker Compose on Linux. For the sake of keeping this guide brief, we won’t dive into Docker compose usage. I’ll recommend you go through Official Docker documentation and Docker Compose documentation to learn more.
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This article demonstrates how to install Docker on Oracle Linux 8 (OL8). RHEL8, and therefore OL8, have switched their focus from Docker and on to Podman (here) for containers, so this installation uses the Docker CE installation from the Docker repository.
Docker Run Yum Installer
This article makes the following assumptions.
- You have a server (physical or virtual) with Oracle Linux 8 (OL8) installed. This is described here.
- You have a separate partition to hold the images and containers. In this article we have a separate virtual disk.
Enable all the required repositories. To do this you are going to need the
Docker Centos Run Yum Install
Configure Disk (Optional)
By default the containers are created under the '/var/lib/docker', so you really need to house this on a separate disk or in a separate partition.
I have a second LUN with a device named '/dev/sdb'. I could build the file system on this disk directly, but I prefer to partition the disks with a single partition using fdisk.
Finish Docker Setup
Enable and start the Docker service.
You can get information about docker using the following commands.
You are now ready to start using Docker!
Docker Commands as Non-Root User
Docker commands run as the 'root' user. You have three choices when if comes to running docker commands.
- Run the docker commands from the root user.
- Allow another user to perform 'sudo' on the docker command, so all commands are run using 'sudo docker ..'.
- Create a group called docker and assign that to the user you want to run docker commands from. The documentation says, 'Warning: The docker group grants privileges equivalent to the root user', so we should avoid this.
In this case we want to run the docker commands from a user called 'docker_user', so we add an entry in the '/etc/sudoers' file and use an alias in the user's '.bash_profile' file so we don't have to keep typing the 'sudo' command.
For more information see:
Hope this helps. Regards Tim..