Installing docker-ce on fedora 26

1. Add Docker CE repo in Fedora 26:

[root@server /home/cipher]# sudo dnf config-manager \
> --add-repo \
> https://download.docker.com/linux/fedora/docker-ce.repo
Adding repo from: https://download.docker.com/linux/fedora/docker-ce.repo

2. Install Docker CE:

[root@server /home/cipher]# dnf install docker-ce

3. Start and enable Docker service:

[root@server /home/cipher]# systemctl start docker
[root@server /home/cipher]# systemctl enable docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service -> /usr/lib/systemd/system/docker.service.

4. Fix Docker access error as a normal user:

[cipher ~]$ docker ps
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock

Add user to docker group:

[cipher ~]$ sudo usermod -aG docker cipher

To reflect the changes without logging out or rebooting:

[cipher ~]$ newgrp docker

Try accessing Docker as a normal user:

[cipher ~]$ docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS    NAMES

5. Pull a Docker image:

[cipher ~]$ docker pull centos
Using default tag: latest
latest: Pulling from library/centos
af4b0a2388c6: Pull complete
Digest: sha256:2671f7a3eea36ce43609e9fe7435ade83094291055f1c96d9d1d1d7c0b986a5d
Status: Downloaded newer image for centos:latest

6. Install Docker Compose:

sudo curl -L https://github.com/docker/compose/releases/download/1.19.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose