Here is how to use latest version of custombuild 2.0 . The commands for custombuild 2.0 are basically identical to custombuild 1.1 and 1.2, so all this stuff should look familiar. Here are instructions to custombuild 1.x.
Update server via custombuild
Download latest version of custombuild 2.0
mv custombuild custombuild-01
tar xvzf custombuild.tar.gz
Setup options.conf: Change PHP version to 5.5 (5.5 is stable, if your setup works with 5.3, it will likely work with 5.5), Apache to 2.4, and mysql to 5.6 (plus set it to install)
now change to the following: