[...]

if [ "$BUILD_BROWSER_CLIENT" == "YES" ]; then
    # AngularJS staff client
    cd ../../../
    echo "Building AngularJS browser staff client"
    cd Open-ILS/web/js/ui/default/staff/
    npm install   # fetch build dependencies
    npm run build-prod # copy to build dir and minify JS files
    # npm cache is big and unnecessary in the final build. remove it.
    rm -r node_modules
    cd ../../../../../ # Open-ILS dir

    # OPAC dependencies
    cd web/opac/deps
    npm install # fetch dependencies
    # and leave them in node_modules; there's no build step
    cd ../../.. # Open-ILS dir

    # Angular staff client
    echo "Building Angular browser staff client"
    cd src/eg2
    npm install   # fetch build dependencies
    ng build --prod

--> ng run build-cs-CZ

    # npm cache is big and unnecessary in the final build. remove it.
    rm -rf node_modules
    cd ../../../../ # release dir

else
    echo "Skipping browser client build"
    cd ../../../../
fi

[...]