feat(doc/docker): Introduce docker images in documentation

cmdeploy/src/cmdeploy/nginx/nginx.conf.j2

@@ -69,7 +69,7 @@ http {
 
 		index index.html index.htm;
 
-		server_name {{ config.mail_domain }} www.{{ config.mail_domain }} mta-sts.{{ config.mail_domain }};
+		server_name {{ config.mail_domain }} mta-sts.{{ config.mail_domain }};
 
 		access_log syslog:server=unix:/dev/log,facility=local7;
 

doc/source/getting_started.rst

@@ -98,6 +98,15 @@ steps. Please substitute it with your own domain.
    configure at your DNS provider (it can take some time until they are
    public).
 
+
+
+Docker installation
+-------------------
+
+There is experimental support for running chatmail via Docker.
+A monolithic image based on the above cmdeploy method is available `through a separate repository <https://github.com/chatmail/docker/pkgs/container/docker>`_.
+See the `chatmail/docker README <https://github.com/chatmail/docker>`_ for full setup instructions.
+
 Other helpful commands
 ----------------------