The default_admin_passwd (option) specifies a custom admin_passwd to be stored during the build.
The preserve_admin_passwd = True (option) specifies the admin_passwd (stored in the Odoo config file) shall be preserved during builds. This is especially critical if the admin_passwd had
been submitted from the Odoo web-interface and stored encrypted (as hash). So this option prevents reversal to the default admin_passwd. On every build, the etc/odoo.cfg file shall be
copied to etc/odoo.cfg.prev.
The
default_admin_passwd(option) specifies a customadmin_passwdto be stored during the build.The
preserve_admin_passwd = True(option) specifies theadmin_passwd(stored in the Odoo config file) shall be preserved during builds. This is especially critical if theadmin_passwdhad been submitted from the Odoo web-interface and stored encrypted (as hash). So this option prevents reversal to the defaultadmin_passwd. On every build, theetc/odoo.cfgfile shall be copied toetc/odoo.cfg.prev.