Add separate container instructions

Fixes #34
Fixes #5

README.md

@@ -8,7 +8,7 @@ To run it:
 
     $ docker run -d -p 80:80 -v /var/run/docker.sock:/tmp/docker.sock jwilder/nginx-proxy
 
-Then start any containers you want proxied with an env var VIRTUAL_HOST=subdomain.youdomain.com
+Then start any containers you want proxied with an env var `IRTUAL_HOST=subdomain.youdomain.com`
 
     $ docker run -e VIRTUAL_HOST=foo.bar.com  ...
 
@@ -24,3 +24,30 @@ If your container exposes multiple ports, nginx-proxy will default to the servic
 ### Multiple Hosts
 
 If you need to support multipe virtual hosts for a container, you can separate each enty with commas.  For example, `foo.bar.com,baz.bar.com,bar.com` and each host will be setup the same.
+
+### Separate Containers
+
+nginx-proxy can also be run as two separate containers using the [jwilder/docker-gen](https://index.docker.io/u/jwilder/docker-gen/)
+image and the official [nginx](https://registry.hub.docker.com/_/nginx/) image.
+
+You may want to do this to prevent having the docker socket bound to a publicly exposed container service.
+
+To run nginx proxy as a separate container you'll need to have [nginx.tmpl](https://github.com/jwilder/nginx-proxy/blob/master/nginx.tmpl) on your host system.
+
+First start nginx with a volume:
+
+
+    $ docker run -d -p 80:80 --name nginx -v /tmp/nginx:/etc/nginx/conf.d -t nginx
+
+Then start the docker-gen container with the shared volume and template:
+
+```
+$ docker run --volumes-from nginx \
+    -v /var/run/docker.sock:/tmp/docker.sock \
+    -v $(pwd)/templates:/etc/docker-gen/templates
+    -t docker-gen -notify-sighup nginx -watch --only-published /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
+```
+
+Finally, start your containers with `VIRTUAL_HOST` environment variables.
+
+    $ docker run -e VIRTUAL_HOST=foo.bar.com  ...