diff --git a/backups/rsyncvolumes/Dockerfile b/backups/rsyncvolumes/Dockerfile
index 52747bf..845c0f0 100644
--- a/backups/rsyncvolumes/Dockerfile
+++ b/backups/rsyncvolumes/Dockerfile
@@ -7,9 +7,11 @@ ENV DEST /var/backups/
 RUN apt-get update && apt-get install --no-install-recommends -y \
       cron gettext-base rsync python-minimal libpython-stdlib
 
+# Avoid overlayfs bug with tail
+VOLUME /var/log
+
 COPY crontab /etc/crontab
 RUN chmod 644 /etc/crontab
-RUN touch /var/log/cron.log
 
 WORKDIR /opt/backup
 COPY rsync.template .
diff --git a/backups/rsyncvolumes/launch.sh b/backups/rsyncvolumes/launch.sh
index a598515..29ad6bc 100644
--- a/backups/rsyncvolumes/launch.sh
+++ b/backups/rsyncvolumes/launch.sh
@@ -2,4 +2,4 @@
 
 envsubst < /opt/backup/rsync.template > /opt/backup/rsync.sh
 envsubst < /opt/backup/plan.tpl.py > /opt/backup/plan.py
-cron && tail -f /var/log/cron.log
+touch /var/log/cron.log && cron && tail -f /var/log/cron.log
diff --git a/odoo/backups/Dockerfile b/odoo/backups/Dockerfile
index ca4cedc..ab9e538 100644
--- a/odoo/backups/Dockerfile
+++ b/odoo/backups/Dockerfile
@@ -10,15 +10,17 @@ USER root
 RUN mkdir backups
 RUN apt-get install -y --no-install-recommends cron gettext-base
 
+# Avoid overlayfs bug with tail
+VOLUME /var/log
+
 COPY crontab /etc/crontab
 RUN chmod 644 /etc/crontab
-RUN touch /var/log/cron.log
 
 COPY backup.template .
 COPY plan.py .
 COPY launch.sh .
 
-RUN chown -R odoo:odoo . && chown odoo:odoo /var/log/cron.log
+RUN chown -R odoo:odoo .
 VOLUME /home/odoo/backups
 
 CMD bash launch.sh
diff --git a/odoo/backups/launch.sh b/odoo/backups/launch.sh
index cfc0505..098b975 100644
--- a/odoo/backups/launch.sh
+++ b/odoo/backups/launch.sh
@@ -2,4 +2,4 @@
 
 envsubst < /home/odoo/backup.template > /home/odoo/backup.sh
 chown odoo:odoo /home/odoo/backup.sh
-cron && tail -f /var/log/cron.log
+touch /var/log/cron.log && cron && tail -f /var/log/cron.log