diff --git a/Dockerfile b/Dockerfile
index 4cd525a..c29e149 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,12 +5,12 @@
 # 2. Checkout source: git@github.com:gasi/docker-node-hello.git
 # 3. Build container: docker build .
 
-FROM    centos:6.4
+FROM    centos:centos6
 
 # Enable EPEL for Node.js
 RUN     rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
 # Install Node.js and npm
-RUN     yum install -y npm
+RUN     yum install -y -q npm
 
 # App
 ADD . /src
diff --git a/Makefile b/Makefile
index a5f614e..d17ec63 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ run:
 	node index.js
 
 run-container:
-	docker run -d gasi/centos-node-hello
+	docker run -p 49160:8080 -d gasi/centos-node-hello 
 
 test:
 	curl localhost
diff --git a/README.md b/README.md
index d7edb94..c18bfeb 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Node.js Hello World on CentOS using [docker][].
 -   Run app:
 
         make run-container
-        # docker run -d gasi/centos-node-hello
+        # docker run -p 49160:8080 -d gasi/centos-node-hello
 
 -   Install `curl`:
 
@@ -52,6 +52,10 @@ Node.js Hello World on CentOS using [docker][].
         # curl localhost:49163
 
     It should print `Hello World` to the console.
+    
+    If you use Boot2Docker on OS X, the port is actually mapped to the Docker host VM, and you should use the following command:
+    
+        curl $(boot2docker ip):<port>
 
 ## Acknowledgements