Install Docker Engine (CE) on RHEL 8.x

Docker Engine is an open source containerization technology for building and containerizing your applications. Docker Engine acts as a client-server application with:

• A server with a long-running daemon process dockerd.
• APIs which specify interfaces that programs can use to talk to and instruct the Docker daemon.
• A command line interface (CLI) client docker.

Credit to Docker.

This below is the simple way to install Docker Engine Community Edition on Red Hat Enterprise Linux 8.x server.

1. Demonstration LAB info:

• OS: Red Hat Enterprise Linux 8.x x86_64
• Hostname: RH8LXCSTD
• IP: 192.168.100.21
• CPU: 2 Cores
• RAM: 2 GB
• Disk: 30 GB

2. Remove existing old Docker version

sudo dnf remove \
docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine \
podman \
runc

sudo rm -rf /etc/yum.repos.d/docker-ce*.repo

3. Configure repositories requirement

• Configure local repository to install packages from RHEL disk

• Add Docker CE official repository

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

4. Install Docker Engine CE (online) latest stable version. Note: we must have internet connection!!!

sudo dnf install docker-ce docker-ce-cli containerd.io

5. Enable and start Docker Engine service

systemctl enable docker --now

6. Verify Docker CE version and Info

docker --verion
docker info

7. Install Docker Compose. Check docker-compose version here

compose_ver=1.27.4
sudo curl -L -k "https://github.com/docker/compose/releases/download/${compose_ver}/docker-compose-linux-$(uname -m)" -o /usr/bin/docker-compose

sudo chmod +x /usr/bin/docker-compose
docker-compose --version

8. Verify that Docker Engine is installed correctly by running the “hello-world” image:

sudo docker run hello-world

• 

Thanks!