[library-web/oscp] Install gnome-doc-utils-stylesheets

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit b5273bac7330c406eb05336b4d561b1d32e7f559
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Tue Jan 14 18:38:48 2020 +0100

    Install gnome-doc-utils-stylesheets

 lgo/Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/lgo/Dockerfile b/lgo/Dockerfile
index 7d177da..f28c232 100644
--- a/lgo/Dockerfile
+++ b/lgo/Dockerfile
@@ -1,7 +1,8 @@
 FROM centos:7
 
 RUN yum install -y epel-release gnome-common glib2-devel intltool docbook-dtds \
-        docbook-style-xsl gtk-doc python-sqlite2 yelp-tools libxslt make git && \
+        docbook-style-xsl gtk-doc python-sqlite2 yelp-tools libxslt make git \
+        gnome-doc-utils-stylesheets && \
     yum install -y python-html5lib && \
     yum -y clean all --enablerepo='*'