After installing a 'pp12' EZ template on a container, Plesk 12.5 is installed instead of Plesk 12.0
This behavior is expected. According to the Virtuozzo containers documentation , version-free auto-upgrade templates automatically update to the last available Plesk version regardless of its number once this version in released.
If you need to install Plesk 12.0 via an EZ template, do the following:
Download the script attached to this article to the Virtuozzo containers server and execute it.
vzpkg install CT_ID pp12 -rto reset the cache.