diff --git a/Dockerfile b/Dockerfile
index 43f0bd8..41c390d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,5 @@ RUN npm install
 
 COPY . /usr/src/app
 
-ENV PORT 5000
-EXPOSE $PORT
+EXPOSE 5000
 CMD [ "npm", "start" ]