use jessie-backports packages

diff --git a/Dockerfile b/Dockerfile
index c4c60b3d9376c6fbc43fdee8cc9813416b9b8206..d5c5675f6f0cc38c3e9567b6a46de253ce10d24e 100644 (file)
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ COPY etc/apt/sources.list /etc/apt/
 COPY requirements.txt /srv
 RUN apt-get update && \
     DEBIAN_PACKAGES=$(egrep -v "^\s*(#|$)" /srv/requirements.txt) && \
-    apt-get install -y --force-yes $DEBIAN_PACKAGES && \
+    apt-get install -f jessie-backports -y --force-yes $DEBIAN_PACKAGES && \
     echo fr_FR.UTF-8 UTF-8 >> /etc/locale.gen && \
     locale-gen && \
     apt-get clean