Add a server for serving Prometheus metrics. Include a configuration
block in the config file. Provide HTTP metrics on the API, along with
process-level metrics and DB pool metrics.
* Add docker/Dockerfile.multiarch
* Update normal Dockerfile to be similar to multiarch one
* docker build run on x86 and arm64 now
manifest not needed, its handled by buildx plugin
* Rename Dockerfile.arm To Dockerfile.debian
* Emulate builder on arm target too
* fix misspell
* Improve Dockerfiles
* naming
* undo multiarchbuild settings as its blocked by a dependeny, see #2806
* Delete Dockerfile.debian
* update activitypub-federation crate to 0.4.0
* fixes
* apub compiles!
* everything compiling!
* almost done, federated follow failing
* some test fixes
* use release
* add code back in