Setting up Docker on Rocky Linux 9.7

Terminal screenshot

$ sudo -i

# dnf remove -y podman buildah docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine

# dnf install -y dnf-plugins-core

# dnf config-manager --add-repo https://download.docker.com/linux/rhel/docker-ce.repo

# dnf install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# systemctl enable --now docker

#systemctl status docker

● docker.service - Docker Application Container Engine

     Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; preset: d>

     Active: active (running) since Fri 2026-06-05 01:19:51 PDT; 15s ago

TriggeredBy: ● docker.socket

       Docs: https://docs.docker.com

   Main PID: 839223 (dockerd)

      Tasks: 10

     Memory: 25.0M (peak: 26.1M)

        CPU: 155ms

     CGroup: /system.slice/docker.service

             └─839223 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/co>

$ sudo usermod -aG docker $USER

$ newgrp docker

$ docker run hello-world

Unable to find image 'hello-world:latest' locally

latest: Pulling from library/hello-world

4f55086f7dd0: Pull complete 

d5e71e642bf5: Download complete 

Digest: sha256:0e760fdfbc48ba8041e7c6db999bb40bfca508b4be580ac75d32c4e29d202ce1

Status: Downloaded newer image for hello-world:latest

Hello from Docker!

This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:

 1. The Docker client contacted the Docker daemon.

 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.

    (amd64)

 3. The Docker daemon created a new container from that image which runs the

    executable that produces the output you are currently reading.

 4. The Docker daemon streamed that output to the Docker client, which sent it

    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:

 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:

 https://hub.docker.com/

For more examples and ideas, visit:

 https://docs.docker.com/get-started/