Announce maubot

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1894

docs/container-images.md

@@ -92,6 +92,8 @@ These services are not part of our default installation, but can be enabled by [
 
 - [anoa/matrix-reminder-bot](https://hub.docker.com/r/anoa/matrix-reminder-bot) - the [matrix-reminder-bot](https://github.com/anoadragon453/matrix-reminder-bot) bot for one-off & recurring reminders and alarms (optional)
 
+- [dock.mau.dev/maubot/maubot](https://mau.dev/maubot/maubot/container_registry) - the [maubot](https://github.com/maubot/maubot) bot (a plugin-based Matrix bot system) (optional)
+
 - [etke.cc/honoroit](https://gitlab.com/etke.cc/honoroit/container_registry) - the [honoroit](https://gitlab.com/etke.cc/honoroit) helpdesk bot (optional)
 
 - [matrixdotorg/go-neb](https://hub.docker.com/r/matrixdotorg/go-neb) - the [Go-NEB](https://github.com/matrix-org/go-neb) bot (optional)

docs/self-building.md

@@ -37,6 +37,7 @@ List of roles where self-building the Docker image is currently possible:
 - `matrix-bot-mjolnir`
 - `matrix-bot-honoroit`
 - `matrix-bot-matrix-reminder-bot`
+- `matrix-bot-maubot`
 - `matrix-email2matrix`
 
 Adding self-building support to other roles is welcome. Feel free to contribute!