title: Liquibase run changeset every time
body: <p>I want to insert usernames to the database based on a system property. The system property value can be</p>
  
  <blockquote>
    <p>users="user1;user2;user3"</p>
  </blockquote>
  
  <p>This process must be repeatable, meaning that every time the applications is deployed, the migration/changeset must check the system property, and if it has changed and the users are not already in the database it should insert them. In order to achieve this I am thinking of using the <a href="http://www.liquibase.org/documentation/changes/custom_change.html" rel="noreferrer">customChange</a> tag. But I want this change to run every time the liquibase runs. Is this possible using liquibase or should I create a custom contextLoadListener?</p>