ruby-json is required for fpm

Change-Id: Ib8a759922879a81a355bca14e3d4beeeb2ad72d4
Signed-off-by: Michal Skalski <mskalski@mirantis.com>

diff --git a/build/docker/Dockerfile b/build/docker/Dockerfile
index 0d2bfd7..1bb56b7 100644 (file)
--- a/build/docker/Dockerfile
+++ b/build/docker/Dockerfile
@@ -17,7 +17,7 @@ ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update
 RUN apt-get install -y software-properties-common python-software-properties \
-    make python-setuptools python-all dpkg-dev debhelper \
+    make python-setuptools python-all dpkg-dev debhelper ruby-json \
     fuseiso git genisoimage bind9-host wget curl lintian tmux lxc iptables \
     ca-certificates sudo apt-utils lsb-release dosfstools debmirror p7zip-full \
     build-essential ruby-dev rubygems-integration python-pip git rpm createrepo dpkg-dev