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@@ -14,7 +14,19 @@ Location is entirely cosmetic so I've decided that adding complexity to optional
 
 You can use [docker-compose.override.yml](https://docs.docker.com/compose/extends/)
 
-### Using SSL with Letsencrypt
+For example, to use a different postgres image:
+
+```yml
+version: '3'
+
+services:
+  db:
+    image: postgres:13-alpine
+```
+
+### Using automatic SSL with Letsencrypt & Caddy (web-ssl container)
+
+Note that Caddy v1 is no longer maintained. It's recommended to use an external web frontend to terminate SSL with.
 
  - ``HTTP_HOST`` in ``.env`` should be set to a valid hostname (i.e. no localhost or IP address)
  - comment out ``web`` container, uncomment ``web-ssl`` in ``docker-compose.yml``