preview.sh

#!/bin/sh

if [ "$(uname)" = "Darwin" ]; then
    # Running on macOS.
    # Let's assume that the user has the Docker CE installed
    # which doesn't require a root password.
    echo "The preview will be available at http://localhost:8080/"
    docker run --rm -v "$(pwd):/antora:ro" -v "$(pwd)/nginx.conf:/etc/nginx/conf.d/default.conf:ro" -p 8080:80 nginx

elif [ "$(expr substr "$(uname -s)" 1 5)" = "Linux" ]; then
    # Running on Linux.
    # Fedora Workstation has python3 installed as a default, so using that
    echo ""
    echo "The preview is available at http://localhost:8080"
    echo ""
    cd ./public
    python3 -m http.server 8080
fi