diff --git a/Dockerfile b/Dockerfile
index af50e17..10b7226 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,10 +3,10 @@ FROM node:8
 LABEL Maintainer="Wolfgang Hottgenroth <woho@hottis.de>"
 LABEL ImageName="registry.gitlab.com/wolutator/hkd"
 
-ARG PIN="031-45-154"
-ARG BROKER="mqtt://127.0.0.1"
-ARG DATA_DIR="/opt/app"
-ARG STORAGE_DIR="/opt/app/storage"
+ENV PIN "031-45-154"
+ENV BROKER "mqtt://127.0.0.1"
+ENV DATA_DIR "/opt/app"
+ENV STORAGE_DIR "/opt/app/storage"
 
 RUN \
   npm install -g homekit2mqtt --unsafe-perm && \