This new role also adds native Traefik support and support for other
(non-`amd64`) architectures via self-building.

hopefully better understandable wording. To write docs I need to learn a new language (feels like it)

describe, how to integrate a pad

Enables optional access to Etherpad's web-UI. This is useful for
managing Etherpad plugins.

Among other things, plugins makes it easy to manage/delete pads if you
install the adminpads2 plugin.

Warn users of the known bug https://github.com/turt2live/matrix-dimension/issues/395