diff --git a/NginxHelloWorld/Dockerfile b/NginxHelloWorld/Dockerfile
index 2e1ce25..90e34e0 100644
--- a/NginxHelloWorld/Dockerfile
+++ b/NginxHelloWorld/Dockerfile
@@ -6,3 +6,4 @@ COPY index.html /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/nginx.conf
 
 CMD /usr/sbin/nginx -g 'daemon off;'
+EXPOSE 80
\ No newline at end of file