On the official XWiki image https://github.com/xwiki/xwiki-docker/blob/master/template/tomcat/setenv.sh#L35, XWiki provides for SecureRandom class (with `java.security.egd` property) value to use **`file:/dev/./urandom`** to combine security and efficiency, ensuring better unpredictability of random values. We need to provide the same feature from the official XWiki image on this Jetty image, with a custom initialization (`xwiki-defaults.ini`) file to be loaded by Jetty (from `$JETTY_HOME/start.d` folder) with this custom value.