Always update the APT repository?
Build the packages
Build the nightly target (packages, build-deps images and VM)
Build the stable target (packages, build-deps images and VM)
Build the release target (packages, build-deps images and VM)
<p style="color:red"><b>Update build dependencies. DO NOT select this if you do not know what you are doing!</b></p> (enabled automatically when a new OS release appears)
Rebuild build-deps images even when their contents did not change (BUILDDEP must also be set)