Backup Rethikdb (#1937)

- You requiere run python-pip for backing up your data

rethinkdb/Dockerfile

@@ -4,6 +4,13 @@ LABEL maintainer="Cristian Mello <cristianc.mello@gmail.com>"
 
 VOLUME /data/rethinkdb_data
 
+#Necessary for the backup rethinkdb
+RUN apt-get -y update \
+    && apt-get -y upgrade \
+    && apt-get -y install python-pip \
+    && pip install rethinkdb \
+    && rm -rf /var/lib/apt/lists/*
+
 RUN cp /etc/rethinkdb/default.conf.sample /etc/rethinkdb/instances.d/instance1.conf
 
 CMD ["rethinkdb", "--bind", "all"]