diff --git a/README.md b/README.md
index 9d52849..b733099 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,9 @@ config.vm.define "s3" do |s3|
     d.image = "jean553/docker-s3-server-dev"
     d.env = {
       "S3_BUCKET_NAME" => "MyBucketName",
+      "CORS_CONF_PATH" => "config/cors-config.xml"
     }
   end
+  config.vm.synced_folder "config/", "/config"
 end
 ```
diff --git a/launch_server.sh b/launch_server.sh
index 758aae8..12378c5 100644
--- a/launch_server.sh
+++ b/launch_server.sh
@@ -1,7 +1,15 @@
 #!/usr/bin/env bash
 
+# build the s3rver command
+COMMAND="s3rver --hostname 0.0.0.0 --port 5000 --directory /tmp"
+if [ -n ${CORS_CONF_PATH} ]
+then
+    COMMAND="$COMMAND --cors $CORS_CONF_PATH"
+fi
+COMMAND="$COMMAND &"
+
 # Launch the local S3 server
-s3rver --hostname 0.0.0.0 --port 5000 --directory /tmp &
+$COMMAND
 
 # Wait 2 seconds to give the server the time to be up
 sleep 2