Cleanup ROOT installation

base/centos-full-root6:7

@@ -25,6 +25,16 @@ FROM centos:7.4.1708
  RUN yum install -y cmake3
  RUN rm -rf epel-release-latest-7.noarch.rpm
 
- RUN export ROOT_VERSION=6.14.06 && source /etc/profile.d/python36.sh && cd /opt && wget https://root.cern.ch/download/root_v$ROOT_VERSION.source.tar.gz && tar xvzf root_v$ROOT_VERSION.source.tar.gz && cd root-$ROOT_VERSION && mkdir obj && cd obj && cmake3 .. && make && echo "cd /opt/root-$ROOT_VERSION && source bin/thisroot.sh &&cd" >> /etc/profile.d/root_env.sh && cd
-
- # RUN echo "source /usr/local/root/bin/thisroot.sh" >> /etc/bashrc
+ RUN export ROOT_VERSION=6.14.06 && \
+     source /etc/profile.d/python36.sh && \
+     cd /tmp && \
+     wget https://root.cern.ch/download/root_v$ROOT_VERSION.source.tar.gz && \
+     tar xvzf root_v$ROOT_VERSION.source.tar.gz && \
+     cd root-$ROOT_VERSION && \
+     mkdir obj && \
+     cd obj && cmake3 .. && \
+     make && \
+     cd .. && \
+     mv obj /opt/root-$ROOT_VERSION && \
+     rm -rf /tmp/root* && \
+     echo "cd /opt/root-$ROOT_VERSION && source bin/thisroot.sh && cd" >> /etc/profile.d/root_env.sh && cd