Links:

• Install Docker on Fedora
• Post-installation steps for Linux

Get rid of old packages:

$ sudo dnf remove docker \
                  docker-common \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine

Install Docker repo for Fedora 25/26/27:

$ sudo dnf -y install dnf-plugins-core
$ sudo dnf config-manager \
    --add-repo \
    https://download.docker.com/linux/fedora/docker-ce.repo

Optionally, live life dangerously by enabling edge and test repos:

$ sudo dnf config-manager --set-enabled docker-ce-edge
$ sudo dnf config-manager --set-enabled docker-ce-test

Finally, install, start and test docker-ce (Community Edition):

$ sudo dnf install docker-ce
$ sudo systemctl start docker
$ sudo docker run hello-world