basic pressbooks composer.json

composer.json

{
    "require": {
        "pressbooks/pressbooks": "*",
        "pressbooks/pressbooks-aldine": "*",
        "pressbooks/pressbooks-book": "*",
        "pressbooks/pressbooks-clarke": "*",
        "pressbooks/pressbooks-donham": "*",
        "pressbooks/pressbooks-jacobs": "*"
    },
    "config": {
        "allow-plugins": {
            "composer/installers": true
        }
    }
}