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Issue description

User Improvement Feedback

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 Description:  The written instructions run contrary to what we are learning. We were told calling the dnf collections consecutively was bad practice. ignore_errors is put in the wrong place. The example also makes no sense, if installing the web package fails why would we install the db package instead? And then if installing the web package succeeds, we attempt to start the mariadb service which probably doesn't exist because it is in the rescue block. It would be better if the exercises made logical sense. 

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