Improve Plugin integrations

Change-Id: Ia301dfb06324e3579ced95bb13bf8065d949d686
diff --git a/Dockerfile b/Dockerfile
index b4e5f01..cec81c5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -86,7 +86,7 @@
 ENV MOJO_LISTEN http://*:${MOJO_PORT}
 ENV MOJO_MODE   production
 
-RUN echo "{Kalamar=>{plugins=>['KorAPXML2Krill','Tei2KorAPXML','KorAPXML2CoNLLU']}}" > kalamar.production.conf
+RUN echo "{Kalamar=>{plugins=>['KorAPXML2Krill','Tei2KorAPXML','KorAPXML2CoNLLU','Plugins'],proxies=>['PROXY_STUB']},'Kalamar-Plugins'=>{default=>['PLUGIN_STUB']}}" > kalamar.production.conf
 
 EXPOSE ${MOJO_PORT}