/usr/share/tripleo-image-elements/mysql-dev/README.md is in python-tripleo-image-elements 0.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | Installs mysql devel package
This is a separate element because different devel packages are installed for
mysql and for mariadb.
|