Each inclusion uses regular expression pattern matching, and must be separated by a new line. An empty list implies that everything is included.
        myapp/src/main/web/.*\.html
        myapp/src/main/web/.*\.jpeg
        myapp/src/main/web/.*\.gif
    

The example above illustrates that a build will only occur, if html/jpeg/gif files have been committed to the GitHub repository. Exclusions take precedence over inclusions, if there is an overlap between included and excluded regions.
More information on regular expressions can be found here.