Improve wordng in examples/nginx/README.md

examples/nginx/README.md

@@ -1,11 +1,17 @@
-# Nginx reverse-proxy fronting playbook's Traefik
+# Nginx reverse-proxy fronting the playbook's integrated Traefik reverse-proxy
 
-This directory contains a sample config that show you how to do reverse-proxying using Nginx and the playbook's internal traefik container.
+This directory contains a sample config that shows you how use the [nginx](https://nginx.org/) webserver to front the integrated [Traefik](https://traefik.io/) reverse-proxy webserver with another reverse-proxy.
 
-This is for when you wish to front the playbook's integrated traefik container with a self-managed Nginx reverse-proxy running on the same server.
-See the [Using your own webserver, instead of this playbook's nginx proxy & Fronting the integrated reverse-proxy webserver with another reverse-proxy](../../docs/configuring-playbook-own-webserver.md#fronting-the-integrated-reverse-proxy-webserver-with-another-reverse-proxy) documentation page and follow the instructions for the playbook's configuration (`inventory/host_vars/matrix.<your-domain>/vars.yml`).
 
-**NOTE**: 
+## Prerequisite configuration
-- that this also disables SSL certificate retrieval, which then has to be done manually (e.g. by using certbot and setting the appropriate path as found in [the example nginx configuration file](./matrix.conf)). For the example nginx config one certificate is used that contains all the used subdomains.
+
-- that [the example nginx configuration file](./matrix.conf) has to be adapted to whatever services you are using. For example, remove element.domain.com from the `server_name` list if you don't use Element web client or add dimension.domain.com to it if you do use Dimension.
+To get started, first follow the [front the integrated reverse-proxy webserver with another reverse-proxy](../../docs/configuring-playbook-own-webserver.md#fronting-the-integrated-reverse-proxy-webserver-with-another-reverse-proxy) instructions and update your playbook's configuration (`inventory/host_vars/matrix.<your-domain>/vars.yml`).
-- that this is just an example and may not be entirely accurate. It may also not cover other use cases (enabling various services or bridges requires additional reverse-proxying configuration).
+
+
+## Using the nginx configuration
+
+Copy the [matrix.conf](matrix.conf) file to your nginx server's filesystem, modify it to your needs and include it your nginx configuration (e.g. `include /path/to/matrix.conf;`).
+
+This configuration **disables SSL certificate retrieval**, so you will **need to obtain SSL certificates manually** (e.g. by using [certbot](https://certbot.eff.org/)) and set the appropriate path in `matrix.conf`. In the example nginx configuration, a single certificate is used for all subdomains (`matrix.DOMAIN`, `element.DOMAIN`, etc.). For your setup, may wish to change this and use separate `server` blocks and separate certificate files for each host.
+
+Also note that your copy of the `matrix.conf` file has to be adapted to whatever services you are using. For example, remove `element.domain.com` from the `server_name` list if you don't use [Element](../../docs/configuring-playbook-client-element.md) web client or add `dimension.domain.com` to it if you do use the [Dimension](../../docs/configuring-playbook-dimension.md) integration manager.