Added a symlink for the config of cloudkitty-api

When mounting a configmap on kubernetes,
it erase the content of the directory.
That's why we need a second directory
for mounting a volume at this place and keep api_paste safe.
Also updated README to explain this.

Author: aimbot31

CloudKitty/api/Dockerfile

@@ -7,7 +7,12 @@ RUN  apt-get update \
         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 \
     && 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.
 
+For the configuration file, you can use :
+
+- `/etc/cloudkitty/cloudkitty.conf`
+- `/etc/cloudkitty-config/cloudkitty.conf`
+
+*If you want to deploy this application on kubernetes, the second location could be useful.*
+
 ### processor
 
 Contains the Dockerfile for CloudKitty's processor.