diff --git a/Dockerfile b/Dockerfile
index 426af53395..6a7a031ab3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,4 +8,6 @@ ADD mrfusion /mrfusion
 
 EXPOSE 8888
 
-CMD ["/mrfusion", "--port=8888"]
+# ENV PORT ||= 8888
+
+CMD ["/mrfusion", "--port=$PORT"]