MacOS

# Install mkcert
brew install mkcert
brew install nss # for Firefox

# install ssl root ca
mkcert -install

# Install ddev
brew tap drud/ddev && brew install ddev

Ubuntu Linux

sudo apt-get update
sudo apt install wget libnss3-tools
curl -L https://github.com/FiloSottile/mkcert/releases/download/v1.4.1/mkcert-v1.4.1-linux-amd64 -o mkcert
chmod +x mkcert
sudo mv mkcert /usr/local/bin
mkcert -install

# Installation über offizielles Installation-Skript
curl -L https://raw.githubusercontent.com/drud/ddev/master/scripts/install_ddev.sh | bash

ddev aktualisieren

MacOS

brew update
brew upgrade ddev
ddev poweroff
ddev delete images