Based on https://gitlab.com/famedly/conduit/-/merge_requests/421

Fix Nix flake build

See merge request famedly/conduit!456

fix: allow reactivation of users using reset-password admin command

See merge request famedly/conduit!458

fix: ignore bad user ids in migration

See merge request famedly/conduit!457

Add a dynamic address resolution to the Docker healthcheck

See merge request famedly/conduit!434

Complement improvements

See merge request famedly/conduit!404

Validate PDU in admins room

See merge request famedly/conduit!382

fix: adjust CI config to runner requirements

See merge request famedly/conduit!455

- make use of more stable BTRFS driver
- set default pull policy to `if-not-present`

Signed-off-by: The one with the braid <the-one@with-the-braid.cf>

Maybe fix room joins

See merge request famedly/conduit!453

This is a workaround for https://github.com/hyperium/hyper/issues/2312

document `trusted_servers` option

See merge request famedly/conduit!451

partial nix fix

See merge request famedly/conduit!446

Add Contributor's Covenant Code of Conduct

See merge request famedly/conduit!448

fix nix docs

See merge request famedly/conduit!449

I made some silly copy paste errors while writing this...

Signed-off-by: r3g_5z <june@girlboss.ceo>

And offer help since it's pretty easy but impossible if you don't have
Nix installed.

Preparing for v0.5.0 release

See merge request famedly/conduit!443