save the environment variables to be used by the cron process

This commit fixes #383

run.sh

@@ -172,6 +172,7 @@ if [ "$1" == "run" ]; then
 
     # start cron job to trigger consecutive updates
     if [ "${UPDATES:-}" == "enabled" ] || [ "${UPDATES:-}" == "1" ]; then
+        printenv > /etc/environment
         /etc/init.d/cron start
         sudo -u renderer touch /var/log/tiles/run.log; tail -f /var/log/tiles/run.log >> /proc/1/fd/1 &
         sudo -u renderer touch /var/log/tiles/osmosis.log; tail -f /var/log/tiles/osmosis.log >> /proc/1/fd/1 &