diff --git a/Dockerfile b/Dockerfile
index ca524720..04257a92 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,9 @@ EXPOSE 8082
 RUN mkdir -p /commafeed/data
 VOLUME /commafeed/data
 
+ENV JAVA_TOOL_OPTIONS -Djava.net.preferIPv4Stack=true -Xtune:virtualized -Xminf0.05 -Xmaxf0.1
+
 COPY commafeed-server/config.yml.example config.yml
 COPY commafeed-server/target/commafeed.jar .
 
-ENV JAVA_TOOL_OPTIONS -Djava.net.preferIPv4Stack=true -Xtune:virtualized -Xminf0.05 -Xmaxf0.1
 CMD ["java", "-jar", "commafeed.jar", "server", "config.yml"]