atrix_nginx_proxy_proxy_matrix_3pid_registration_v3_to_r0_redirect_enabled
is the right variable to check (twice) in the corresponding branch.

as you said: repeat it for the else-case, where the ma1sd might be running on sans_container.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2986

also change the order of "set $backend" and "rewrite" here in the 3pid registration section

exchanged "^~" with "~" as a pattern matching in the location part.
I am very sure, that it only works using "~". I am not quite sure though, if this is the right way to do it, because "~" is probably more expensive than "^~"

the rewrite has to be behind the definition of the $backend. Otherwise nginx will fail to work. This is probably because "break" goes directly to the proxy_pass which uses $backend.

Hopefully fixes: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2954

Untested.

Patch inspired by: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2954#issuecomment-1795029963

Currently v3.0.0 tested with no issues.
So remove matrix_user_verification_service_docker_image from groups_vars.

/.npm must be writable or an error will be reported.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2954

Related to #2375, #2975, and #2847

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2961

Related to e87f5c11d7

It seems like with the default versioning detection strategy (`docker`),
the version is detected up to the hyphen:

> Renovate tries to follow the most common conventions that are used to tag Docker images.
> In particular, Renovate treats the text after the first hyphen as a type of platform/compatibility indicator.

Perhaps with `semver` would be more appropriate for this image.

More details in: https://docs.renovatebot.com/modules/versioning/

Self-build now requires the new docker buildx/buildkit, so switch
from the ansible docker module to running a docker build command,
like elsewhere.

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

Patch contributed by JulianF.