Setup mkcert for Ubuntu 20+
- Install certutil
sudo apt install libnss3-tools
- Download and install mkcert (from prebuilt binaries)
curl -JLO "https://dl.filippo.io/mkcert/latest?for=linux/amd64"
chmod +x mkcert-v*-linux-amd64
sudo cp mkcert-v*-linux-amd64 /usr/local/bin/mkcert