[DBRotateBackup] Pass CI

pica-db-backup-rotation/Dockerfile

@@ -2,13 +2,8 @@ FROM registry.picasoft.net/pica-debian:stretch
 
 RUN apt-get update \
     && apt-get -y upgrade \
-    && apt-get -y install \
-      cron \
-      python3 \
-      python3-pip \
-    && pip3 install \
-      rotate-backups \
-      python-crontab \
+    && apt-get -y install cron python3 python3-pip \
+    && pip3 install rotate-backups python-crontab \
     && rm -rf /var/lib/apt/lists/*
 
 VOLUME  ["/backup"]