Update DockerfileBase to ruby 2.5

Author: nygrenh

DockerfileBase

@@ -1,4 +1,4 @@
-FROM ruby:2.3
+FROM ruby:2.5
 LABEL name tmc-server-base
 
 ENV PHANTOMJS_VERSION 2.1.1
@@ -13,7 +13,7 @@ RUN wget --no-check-certificate -O /tmp/phantomjs.tar.bz2  https://bitbucket.org
     mv /tmp/phantomjs* /srv/var/phantomjs && \
     ln -s /srv/var/phantomjs/bin/phantomjs /usr/bin/phantomjs && \
     \
-    echo "deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main" > /etc/apt/sources.list.d/postgresql.list && \
+    echo "deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main" > /etc/apt/sources.list.d/postgresql.list && \
     echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" > /etc/apt/sources.list.d/webupd8team-java.list && \
     echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" >> /etc/apt/sources.list.d/webupd8team-java.list && \
     echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \