diff --git a/Dockerfile b/Dockerfile
index 1344495b..e8d73a68 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,3 @@
-# Create an image based on https://github.com/mhart/alpine-node/tree/f7fedaee10cf8569f4e3eb2c3391eb244636acb6
 FROM node:10-alpine
 
 WORKDIR /RTL
@@ -8,5 +7,7 @@ COPY . /RTL
 # Install dependencies
 RUN npm install
 
+EXPOSE 3000
+
 #Run the app server
 ENTRYPOINT ["node", "rtl"]