Fix logrotate with web and trefle container

docker/dockerfile_trefle

@@ -29,10 +29,11 @@ COPY trefle/srv/authorisations.csv ./authorisations.csv
 COPY trefle/start.sh .
 
 
-# setup virtualenv
+# setup virtualenv + permission
 RUN pip install pip -U && \
     pip install gunicorn && \
-    pip install git+${TREFLE_GIT}@${TREFLE_VERSION}
+    pip install git+${TREFLE_GIT}@${TREFLE_VERSION} && \
+    chmod 600 /etc/logrotate.d/gunicorn
 
 #start
 ENTRYPOINT ./start.sh

docker/dockerfile_web

@@ -11,7 +11,7 @@ RUN git clone -b ${TREFLE_BACK_VERSION} ${TREFLE_GIT} /srv/trefle && \
     npm run build
 
 
-FROM ubuntu:xenial
+FROM ubuntu:bionic
 
 LABEL maintainer="labonneformation@pole-emploi.fr"
 
@@ -26,6 +26,7 @@ RUN apt-get update && apt-get -y install \
                                  vim \
                                  bzip2 \
                                  cron \
+                                 rsyslog \
                                  logrotate \
                                  iptables \
                                  git \