Update comment

Author: DanWahlin

node.dockerfile

@@ -4,7 +4,9 @@
 
 # docker network create --driver bridge isolated_network
 # docker run -d --net=isolated_network --name mongodb mongo
-# docker run -d --net=isolated_network --name nodeapp -p 3000:3000 danwahlin/nodeapp
+
+# NOTE: $(pwd) in the following line is for Mac and Linux. See https://blog.codewithdan.com/docker-volumes-and-print-working-directory-pwd/ for Windows examples.
+# docker run -d --net=isolated_network --name nodeapp -p 3000:3000 -v $(pwd)/logs:/var/www/logs danwahlin/nodeapp
 
 # Seed the database with sample database
 # Run: docker exec nodeapp node dbSeeder.js