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As of Registry v3.2.0, images or any other static content may also be served from the /local directory, by placing these files in /local/webroot/mediaresources. Make sure any files you upload there are readable by the web server user (e.g. apache).
Once uploaded, files are accessible without authentication at http[s]://yourserver/registry/medialocal-resources/filename, and can be used anywhere, including Registry content such as mostly static documents (described above), Themes, or Service Logos.
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