docker: log to stdout

previously the log (only the exceptions) were log
into /var/log/uwsgi/uwsgi.log

this is disturbing for the admins:
* they see an internal error on HTTP port
* no log where they are expected (docker logs)

this commit fixes this issue

dockerfiles/docker-entrypoint.sh

@@ -165,8 +165,6 @@ if [ $DRY_RUN -eq 1 ]; then
     exit
 fi
 
-touch /var/run/uwsgi-logrotate
-chown -R searxng:searxng /var/log/uwsgi /var/run/uwsgi-logrotate
 unset MORTY_KEY
 
 # Start uwsgi