Related to 0241c71a4c
Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3270#issuecomment-2143782962
With this change, it should be possible for people to adjust the Docker
dependency from `docker.service` to something else (e.g. `pkg-ContainerManager-dockerd.service`),
or to completely eliminate it by setting `devture_systemd_docker_base_docker_service_name` to an empty string.
This makes it easier for people to use the playbook against a Synology DSM server.
Without explicitly passing the `media_url` configuration,
Heisenbridge would try to guess it. It works most of the time,
but some people are experiencing trouble with it.
There's no need for wasteful work and for potential unreliability,
so we now configure the `media_url` explicitly.
Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2932