normalisation to env parameter

.env

 MODELS_PATH=./models/
 YAML=/opt/models/gmm_hmm3.yaml
 NB_WORKERS=2
+NORM=--norm
\ No newline at end of file

docker-compose.yml

@@ -18,6 +18,9 @@ services:
     image: linagora/speech-enhencement
     expose:
       - "5000"
+    env_file: .env
+    environment:
+      - NORM
 
   kaldi:
     image: linagora/kaldi

lib/controller/speech-enhancement.js

@@ -34,8 +34,7 @@ module.exports = config => {
               filename: 'wavFile',
               contentType: 'audio/x-wav'
             }
-          },
-          msg: '-n'
+          }
         },
         encoding: null
       };