Container image minimization

Changed python container images to python-alpine due to size reduction

Change-Id: I8cd7a7d2661816e6f6cefa271667744838cfb376
Issue-ID: INT-877
Issue-ID: INT-876
Signed-off-by: Simon Hrabos <simon.hrabos@tieto.com>
diff --git a/scripts/multicloud-ocata/generic_sim/Dockerfile b/scripts/multicloud-ocata/generic_sim/Dockerfile
index 688b58a..724b9d7 100644
--- a/scripts/multicloud-ocata/generic_sim/Dockerfile
+++ b/scripts/multicloud-ocata/generic_sim/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:2.7
+FROM python:2.7-alpine
 
 EXPOSE 8080