Reduced the size of processor image

CloudKitty/api/Dockerfile

@@ -1,13 +1,15 @@
 FROM python:3.7-slim-buster
 
-RUN  apt-get update \
+RUN apt-get update \
     && apt-get install --no-install-recommends -y \
         apache2 \
         libapache2-mod-wsgi-py3 \
         gcc \
         python3-dev \
-    && pip install cloudkitty \
-    && mkdir /etc/cloudkitty \
+    && pip install cloudkitty PyMySQL redis \
+    && mkdir \
+        /etc/cloudkitty \
+        /etc/cloudkitty-config \
     && apt-get purge -y \
         gcc \
         python3-dev \

CloudKitty/processor/Dockerfile

@@ -1,5 +1,18 @@
-FROM python:3.7-buster
+FROM python:3.7-slim-buster
 
-RUN pip install cloudkitty
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+        gcc \
+        python3-dev \
+    && pip install cloudkitty PyMySQL redis \
+    && mkdir \
+        /etc/cloudkitty \
+        /etc/cloudkitty-config \
+    && apt-get purge -y \
+        gcc \
+        python3-dev \
+    && apt-get clean -y \
+    && rm -rf /var/cache/apt \
+    && rm -rf /var/lib/apt/lists/*
 
 CMD [ "cloudkitty-processor" ]

README.md

@@ -4,6 +4,13 @@ This repository contains the Dockerfiles for Objectif Libre's official images.
 
 ## CloudKitty
 
+If you wish to configure CloudKitty, the configuration files are located here :
+
+- `/etc/cloudkitty/metrics.yml`
+- `/etc/cloudkitty/cloudkitty.conf`
+
+Please, refer to the [documentation of cloudkitty](https://docs.openstack.org/cloudkitty/latest/admin/configuration/configuration.html) if you don't know how to use these files.
+
 ### api
 
 Contains the Dockerfile for CloudKitty's API and its dependencies.