Adds migration engine for peewee ORM

bug 590

Change-Id: If6752715d455cbeb3dc2633e9b62f79360fef767
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7f57036..3c00b7a 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -45,6 +45,6 @@
 
 ENV OSMPOL_SQL_DATABASE_URI sqlite:///policy_module.db
 
-ENV OSMPOL_GLOBAL_LOG_LEVEL INFO
+ENV OSMPOL_GLOBAL_LOGLEVEL INFO
 
 CMD osm-policy-agent