diff --git a/Dockerfile b/Dockerfile
index 01945d4..332f790 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,9 @@
 FROM docker.io/alpine:3.7
 MAINTAINER Jan Christian Grünhage <jan.christian@gruenhage.xyz>
 
+ENV UID=1337 \
+    GID=1337
+
 RUN apk update \
  && apk upgrade \
  && apk add \