Prewarm cache for first visitor

Author: vmcj

update_demoweb.sh

@@ -30,3 +30,7 @@ mysql $MYSQLOPTS "$DBNAME" < domjudge_demo.sql
 
 # Reset apache alias to correct state
 sed -i 's|Alias /domjudge|Alias /demoweb|g' etc/apache.conf
+
+# Warmup the cache for our first visitor
+./webapp/bin/console cache:clear
+./webapp/bin/console cache:warmup