Cleanup RUN commands in base Dockerfile

This will merge several RUN statements into one RUN statement to reduce
the number of the layers of the base Docker image.

TrivialFix

Change-Id: I69b00b2e7fa7717923f0fe364c5be9b38a2dbb90

docker/base/Dockerfile.j2

@@ -12,8 +12,8 @@ ENV KOLLA_INSTALL_METATYPE {{ install_metatype }}
 
 #### Customize PS1 to be used with bash shell
 COPY kolla_bashrc /tmp/
-RUN cat /tmp/kolla_bashrc >> /etc/skel/.bashrc
-RUN cat /tmp/kolla_bashrc >> /root/.bashrc
+RUN cat /tmp/kolla_bashrc >> /etc/skel/.bashrc \
+    && cat /tmp/kolla_bashrc >> /root/.bashrc
 
 # PS1 var when used /bin/sh shell
 ENV PS1="$(tput bold)($(printenv KOLLA_SERVICE_NAME))$(tput sgr0)[$(id -un)@$(hostname -s) $(pwd)]$ "
@@ -26,10 +26,9 @@ ENV PS1="$(tput bold)($(printenv KOLLA_SERVICE_NAME))$(tput sgr0)[$(id -un)@$(ho
 {% if base_distro in ['fedora', 'centos', 'oraclelinux', 'rhel'] %}
 
 RUN if [ $(awk '{match($0, /[0-9]+/,version)}END{print version[0]}' /etc/system-release) != "{{ supported_distro_release }}" ]; then \
-        echo "Only supported {{ supported_distro_release }} release on {{ base_distro }}"; false; fi
-
-# Customize PS1 bash shell
-RUN cat /tmp/kolla_bashrc >> /etc/bashrc
+        echo "Only supported {{ supported_distro_release }} release on {{ base_distro }}"; false; \
+    fi \
+    && cat /tmp/kolla_bashrc >> /etc/bashrc
 
 #### BEGIN REPO ENABLEMENT
 # Turns on Elasticsearch repos
@@ -42,9 +41,8 @@ COPY kibana.yum.repo /etc/yum.repos.d/kibana.yum.repo
 COPY mariadb.yum.repo /etc/yum.repos.d/MariaDB.repo
 
 RUN yum -y install \
-        http://repo.percona.com/release/7/RPMS/x86_64/percona-release-0.1-3.noarch.rpm
-
-RUN rpm --import http://yum.mariadb.org/RPM-GPG-KEY-MariaDB \
+        http://repo.percona.com/release/7/RPMS/x86_64/percona-release-0.1-3.noarch.rpm \
+    && rpm --import http://yum.mariadb.org/RPM-GPG-KEY-MariaDB \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-Percona \
     && rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch
 
@@ -104,8 +102,6 @@ RUN yum -y install \
         tar \
         yum-utils \
         http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/epel-release-7-5.noarch.rpm \
-    && yum clean all \
-    # TODO(pbourke): replace with mirror.centos.org once openstack-mitaka-1-3 is promoted to stable
     && rpm -Uvh --nodeps \
         http://buildlogs.centos.org/centos/7/cloud/x86_64/openstack-mitaka/centos-release-openstack-mitaka-1-3.el7.noarch.rpm \
         http://mirror.centos.org/centos-7/7/extras/x86_64/Packages/centos-release-ceph-hammer-1.0-5.el7.centos.noarch.rpm \
@@ -115,11 +111,10 @@ RUN yum -y install \
     && sed -i 's/\$releasever/7/g' /etc/yum.repos.d/CentOS-*.repo \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Storage \
-    && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization
-
-RUN yum-config-manager --enable ol7_optional_latest ol7_addons
-RUN yum -y install \
-        yum-plugin-priorities \
+    && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization \
+    && yum-config-manager --enable ol7_optional_latest ol7_addons \
+    && yum -y install \
+           yum-plugin-priorities \
     && yum clean all
 
     {% endif %}
@@ -144,11 +139,8 @@ RUN yum -y install \
     if base_distro in ['fedora', 'centos', 'oraclelinux', 'rhel'] #}
 
 RUN yum -y update \
-    && yum clean all
-
-# Pin package versions
-RUN yum -y install \
-        yum-plugin-versionlock \
+    && yum -y install \
+           yum-plugin-versionlock \
     && yum clean all
 COPY versionlock.list /etc/yum/pluginconf.d/
 
@@ -255,8 +247,7 @@ COPY curlrc /root/.curlrc
 RUN touch /usr/local/bin/kolla_extend_start \
     && chmod 755 /usr/local/bin/kolla_start /usr/local/bin/kolla_extend_start /usr/local/bin/kolla_set_configs \
     && chmod 440 /etc/sudoers \
-    && groupadd kolla
-
-RUN rm -f /tmp/kolla_bashrc
+    && groupadd kolla \
+    && rm -f /tmp/kolla_bashrc
 
 CMD ["kolla_start"]