diff --git a/docker/demo/Dockerfile b/docker/demo/Dockerfile
index b65fbb08..d588fd06 100644
--- a/docker/demo/Dockerfile
+++ b/docker/demo/Dockerfile
@@ -5,12 +5,12 @@ ENV SERVER_PORT="8080"
 ENV JMX_PORT="9090"
 ENV SERVER_PWD=somePW
 
-COPY seb-server-$SEBSERVER_JAR.jar /sebserver/seb-server-$SEBSERVER_JAR.jar
-COPY docker/demo/config/ /sebserver/config/
-
-RUN addgroup -S spring && adduser -S spring -G spring
+RUN addgroup --system spring && adduser --system spring --group spring
 USER spring:spring
 
+COPY docker/demo/config/ /sebserver/config/
+COPY seb-server-$SEBSERVER_JAR.jar /sebserver/seb-server-$SEBSERVER_JAR.jar
+
 WORKDIR /sebserver
 
 CMD exec java \