diff --git a/bob_party/Dockerfile b/bob_party/Dockerfile
index efb6fa2..c794cb3 100644
--- a/bob_party/Dockerfile
+++ b/bob_party/Dockerfile
@@ -14,4 +14,6 @@ RUN yarn
 # Bundle app source
 COPY bob_party/server.js .
 
+EXPOSE 3000
+
 CMD [ "node", "server.js" ]
\ No newline at end of file