Added a symlink for the config of cloudkitty-api

When mounting a ConfigMap on kubernetes,
it erases the content of the directory.
That's why a second directory is required
in order to preserve static configuration files.
Also updated README to explain where the config files are.

Author: aimbot31

CloudKitty/api/Dockerfile

@@ -1,13 +1,21 @@
 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 \
+    && mkdir \
+        /etc/cloudkitty \
+        /etc/cloudkitty-config \
+    && ln -sf \
+        /etc/cloudkitty/cloudkitty.conf \
+        /etc/cloudkitty-config/cloudkitty.conf \
+    && ln -sf \
+        /etc/cloudkitty/metrics.yml \
+        /etc/cloudkitty-config/metrics.yml \
     && apt-get purge -y \
         gcc \
         python3-dev \

CloudKitty/processor/Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3.7-buster
 
-RUN pip install cloudkitty
+RUN pip install cloudkitty \
+    && mkdir /etc/cloudkitty
 
 CMD [ "cloudkitty-processor" ]

README.md

@@ -8,6 +8,13 @@ This repository contains the Dockerfiles for Objectif Libre's official images.
 
 Contains the Dockerfile for CloudKitty's API and its dependencies.
 
+If you wish to configure CloudKitty, the configuration files are located here :
+
+- `/etc/cloudkitty-config/metrics.yml`
+- `/etc/cloudkitty-config/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 theses files.
+
 ### processor
 
 Contains the Dockerfile for CloudKitty's processor.