RUN sed -i 's/enabled=1/enabled=0/' /etc/yum/pluginconf.d/fastestmirror.conf
RUN sed -i 's|#baseurl=http://mirror.centos.org/centos|baseurl=http://mirrors.ocf.berkeley.edu/centos|' /etc/yum.repos.d/*.repo
-RUN rpm --rebuilddb && \
+RUN rpm --rebuilddb
RUN yum clean all
RUN yum update -y