In this tutorial guide, we are going to learn how to install and use Docker-ce on Fedora 35.
Docker is a set of platforms as a service product that uses OS-level virtualization to deliver software in packages called containers. Containers are usually isolated from one another and bundled their own software libraries and configuration files, they can communicate with each other through well-defined channels.
Docker makes it possible to get more apps running on the same old servers and also makes it easy to package and ship programs.
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Prerequisites
- Make sure you have user with sudo privileges
- Have Fedora 35 server up and running
- Have basic kwoledge about running commands on a terminal
Table of Contents
- Run system updates
- Uninstall old docker versions
- Set up Docker repositories
- Install Docker Engine
- Pulling Images
Run system updates
The first thing we need to do is to install recent updates into our system. This makes our packages up to date. We can do so with the following command;
$ sudo dnf update -yAfter the updates are complete then we need to remove old docker versions from the system.
2. Uninstall old Docker versions
We need to uninstall old Docker versions in our system. The new Docker is called Docker-ce. You can do that with the following command;
$ sudo dnf remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engineIf you get a message like this on your terminal, don’t worry, it means you do not have any docker on your system. Move ahead and install a newer version of Docker into your system
No match for argument: docker
No match for argument: docker-client
No match for argument: docker-client-latest
No match for argument: docker-common
No match for argument: docker-latest
No match for argument: docker-latest-logrotate
No match for argument: docker-logrotate
No match for argument: docker-selinux
No match for argument: docker-engine-selinux
No match for argument: docker-engine
No packages marked for removal.
Dependencies resolved.
Nothing to do.
Complete!3. Set up Docker-ce repository
For newer systems, you need to add the Docker repository into your system. For this learning, I am running a fresh system install of Fedora. So we need to add a Docker repository with the following command;
First, add the following plugins, it provides the commands to manage dnf repositories.
$ sudo dnf install dnf-plugins-core -yIt seems nothing to do because dnf-plugin-core comes as a default with the Fedora 35.
Sample output
DigitalOcean Droplet Agent 32 kB/s | 3.3 kB 00:00
Package dnf-plugins-core-4.0.24-1.fc35.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!Then proceed to add the repository with the following command;
$ sudo dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repoIf your addition is successful then you can proceed to install Docker Engine.
Install Docker-ce
Use the following command to install the latest Docker Engine and containerd.
$ sudo dnf install docker-ce docker-ce-cli containerd.ioSample output
Docker CE Stable - x86_64 106 kB/s | 5.7 kB 00:00
DigitalOcean Droplet Agent 47 kB/s | 3.3 kB 00:00
Dependencies resolved.
=================================================================================================================
Package Architecture Version Repository Size
=================================================================================================================
Installing:
containerd.io x86_64 1.4.12-3.1.fc35 docker-ce-stable 27 M
docker-ce x86_64 3:20.10.11-3.fc35 docker-ce-stable 22 M
docker-ce-cli x86_64 1:20.10.11-3.fc35 docker-ce-stable 29 M
Installing dependencies:
container-selinux noarch 2:2.170.0-2.fc35 updates 50 k
docker-ce-rootless-extras x86_64 20.10.11-3.fc35 docker-ce-stable 3.9 M
docker-scan-plugin x86_64 0.9.0-3.fc35 docker-ce-stable 3.7 M
fuse-common x86_64 3.10.5-1.fc35 fedora 8.3 k
fuse-overlayfs x86_64 1.7.1-2.fc35 fedora 72 k
fuse3 x86_64 3.10.5-1.fc35 fedora 54 k
fuse3-libs x86_64 3.10.5-1.fc35 fedora 92 k
iptables-legacy x86_64 1.8.7-13.fc35 fedora 53 k
libcgroup x86_64 2.0-3.fc35 fedora 73 k
libslirp x86_64 4.6.1-2.fc35 fedora 72 k
slirp4netns x86_64 1.1.12-2.fc35 fedora 55 k
Transaction Summary
=================================================================================================================
Install 14 Packages
Total download size: 86 M
Installed size: 373 M
Is this ok [y/N]: yFrom here we have installed Docker-CE, lets check the version of the installed docker with the following command.
$ docker version
Client: Docker Engine - Community
Version: 20.10.11
API version: 1.41
Go version: go1.16.9
Git commit: dea9396
Built: Thu Nov 18 00:38:10 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?Start Docker-ce
For you to start using Docker, you need to start docker engine with the following,
$ systemctl start docker Enble Docker-ce
Enable the Docker engine to start on boot with the following command; you don’t have to be starting docker every time you boot your system.
$ systemctl enable docker Check the Docker-ce status
To check if our Docker engine daemon is running, invoke systemctl status docker on your command line.
$ systemctl status dockerIf you get the status active, then your docker daemon is running.
Sample output
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2021-11-22 19:01:53 UTC; 4min 43s ago
TriggeredBy: ● docker.socket
Docs: https://docs.docker.com
Main PID: 19171 (dockerd)
Tasks: 7
Memory: 27.2M
CPU: 271ms
CGroup: /system.slice/docker.service
└─19171 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.220298055Z" level=info msg="scheme \"unix\" >
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.220408376Z" level=info msg="ccResolverWrappe>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.220456897Z" level=info msg="ClientConn switc>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.251216816Z" level=info msg="Loading containe>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.405807849Z" level=info msg="Default bridge (>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.517435166Z" level=info msg="Loading containe>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.539112957Z" level=info msg="Docker daemon" c>
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.540644313Z" level=info msg="Daemon has compl>
Nov 22 19:01:53 fedora-35 systemd[1]: Started Docker Application Container Engine.
Nov 22 19:01:53 fedora-35 dockerd[19171]: time="2021-11-22T19:01:53.578310053Z" level=info msg="API listen onPull Docker-ce image
We can pull the Docker image with the following command. As an example let me pull Redis image from the Docker hub.
$ docker pull redisSample output
Using default tag: latest
latest: Pulling from library/redis
eff15d958d66: Pull complete
1aca8391092b: Pull complete
06e460b3ba1b: Pull complete
def49df025c0: Pull complete
646c72a19e83: Pull complete
db2c789841df: Pull complete
Digest: sha256:619af14d3a95c30759a1978da1b2ce375504f1af70ff9eea2a8e35febc45d747
Status: Downloaded newer image for redis:latest
docker.io/library/redis:latestConclusion
From here you can see our Docker-CE is running as expected, Learn other docker commands to be well conversant with docker. Docker Documentation has a tone of information
