dist/docker/redhat: Start up JMX proxy and include tools

Make the Docker image more user-friendly by starting up JMX proxy in the
background and install Scylla tools in the image. Also add a welcome
banner like we have with our AMI so that users have pointers to nodetool
and cqlsh, as well as our documentation.
Message-Id: <1460376059-3678-1-git-send-email-penberg@scylladb.com>

dist/docker/redhat/Dockerfile

@@ -7,13 +7,17 @@ ADD scylla.repo /etc/yum.repos.d/
 RUN yum -y clean expire-cache
 RUN yum -y update
 RUN yum -y remove boost-thread boost-system
-RUN yum -y install scylla-server hostname
+RUN yum -y install scylla-server scylla-jmx scylla-tools hostname
 RUN yum clean all
+
 ADD start-scylla /start-scylla
 RUN chown scylla /start-scylla
 
+ADD bashrc /var/lib/scylla/.bashrc
+RUN chown scylla /var/lib/scylla/.bashrc
+
 USER scylla
 EXPOSE 10000 9042 9160 7000 7001
 VOLUME /var/lib/scylla
 
-CMD /start-scylla
+CMD /start-scylla && /bin/bash

dist/docker/redhat/bashrc

@@ -0,0 +1,20 @@
+echo
+echo '   _____            _ _       _____  ____  '
+echo '  / ____|          | | |     |  __ \|  _ \ '
+echo ' | (___   ___ _   _| | | __ _| |  | | |_) |'
+echo '  \___ \ / __| | | | | |/ _` | |  | |  _ < '
+echo '  ____) | (__| |_| | | | (_| | |__| | |_) |'
+echo ' |_____/ \___|\__, |_|_|\__,_|_____/|____/ '
+echo '               __/ |                       '
+echo '              |___/                        '
+echo ''
+echo ''
+echo 'Nodetool:'
+echo '	nodetool help'
+echo 'CQL Shell:'
+echo '	cqlsh'
+echo 'More documentation available at: '
+echo '	http://www.scylladb.com/doc/'
+echo
+
+export CQLSH_HOST=$(hostname -i)

dist/docker/redhat/start-scylla

@@ -9,4 +9,8 @@ sed -e "s/seeds:.*/seeds: $IP/g" /var/lib/scylla/conf/scylla.yaml > $HOME/scylla
                 --options-file $HOME/scylla.yaml \
                 --listen-address $IP \
                 --rpc-address $IP \
-                --network-stack posix
+                --network-stack posix &> /dev/null &
+
+source /etc/sysconfig/scylla-jmx
+export SCYLLA_HOME SCYLLA_CONF
+exec /usr/lib/scylla/jmx/scylla-jmx -l /usr/lib/scylla/jmx &> /dev/null &