Docker Installation Made Simple on Rocky Linux 8

#### Prerequisites Before you begin, ensure you have: - A server running Rocky Linux 8 (64-bit) - SSH access to your server with sudo privileges - Basic familiarity with the command line on Linux #### Step 1: Install Docker Engine Add the Docker repository and install Docker Engine: ```bash sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo sudo dnf install docker-ce --nobest -y ``` #### Step 2: Start and Enable Docker Start the Docker service and enable it to start on boot: ```bash sudo systemctl start docker sudo systemctl enable docker ``` #### Step 3: Verify Docker Installation Check the Docker version to verify the installation: ```bash docker --version ``` #### Step 4: Run a Docker Container (Optional) Pull a test image and run a container to verify Docker functionality: ```bash sudo docker run hello-world ``` This command downloads a test Docker image and runs it in a container. #### Step 5: Manage Docker as a Non-root User (Optional) If you want to manage Docker as a non-root user, add your user to the `docker` group: ```bash sudo usermod -aG docker $USER ``` Log out and log back in for the changes to take effect. #### Step 6: Basic Docker Commands Explore some basic Docker commands to manage containers: - List running containers: ```bash docker ps ``` - List all containers (including stopped ones): ```bash docker ps -a ``` - Pull an image from Docker Hub: ```bash docker pull image_name ``` - Start a stopped container: ```bash docker start container_name_or_id ``` #### Conclusion You have successfully installed Docker on Rocky Linux 8 and verified its functionality with a test container. Start using Docker to containerize and manage your applications efficiently. **Additional Resources:** - **Docker Documentation:** [https://docs.docker.com/](https://docs.docker.com/) - **Rocky Linux Documentation:** [https://docs.rockylinux.org/](https://docs.rockylinux.org/)