[DBBackupRotation] Add forgotten backslash

get-modified-image.sh

@@ -23,4 +23,4 @@ if [ "$RES" = "" ]; then exit 1; fi
 echo "export MODIFIED_IMAGE_FULL_TEST=registry.test.picasoft.net/${RES}" >> variables
 echo "export MODIFIED_IMAGE_FULL=registry.picasoft.net/${RES}" >> variables
 
-echo "Found modified image : $RES"
+echo "Found modified folder : $RES"

pica-db-backup-rotation/Dockerfile

@@ -2,7 +2,7 @@ FROM python:3-slim-buster
 
 RUN apt-get update \
     && apt-get -y upgrade \
-    && apt-get -y install cron
+    && apt-get -y install cron \
     && pip3 install rotate-backups python-crontab \
     && rm -rf /var/lib/apt/lists/*