Install Docker CE on Fedora 30

Steps

# Main guide
https://docs.docker.com/install/linux/docker-ce/fedora/

# Set up the repository
sudo dnf -y install dnf-plugins-core 
 
sudo dnf config-manager \ 
--add-repo \ 
https://download.docker.com/linux/fedora/docker-ce.repo

# Disable the stable repo (for now) and enable the nightly repo
sudo dnf config-manager --set-disabled docker-ce-stable
sudo dnf config-manager --set-enabled docker-ce-nightly

# Install F28's containerd.io repo
# From https://download.docker.com/linux/fedora/28/x86_64/stable/Packages/
sudo dnf install https://download.docker.com/linux/fedora/28/x86_64/stable/Packages/containerd.io-1.2.5-3.1.fc28.x86_64.rpm

# Install docker nightly (deplist satisfied)
sudo dnf install docker-ce docker-ce-cli

# (Optional) version lock containerd.io
sudo dnf versionlock containerd.io.x86_64

Will there eventually be a official version for fedora 30?

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

is alternative.