*: remove deprecated backup (#2129)

* *: remove backup

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

* fix lint

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

* website/docs: add docs

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

* *: final cleanup

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

* ci: use correct pyproject when migrating from stable

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

* website/docs: fix broken docs

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

website/docs/releases/next.md

@@ -0,0 +1,42 @@
+---
+title: Release 2022.2
+slug: "2022.2"
+---
+
+## Breaking changes
+
+### Removal of integrated backup
+
+The integrated backup functionality has been removed due to the following reasons:
+
+- It caused a lot of issues during restore, with things breaking and difficult to restore backups
+- Limited compatibility (only supported local and S3 backups)
+- Most environments already have a solution for backups, so we feel that investing more time into making this feature better should be spent on more important things.
+
+If you don't already have a standard backup solution for other applications, you can consider these replacements:
+
+- https://github.com/kartoza/docker-pg-backup for docker-compose and
+- https://devtron.ai/blog/creating-a-kubernetes-cron-job-to-backup-postgres-db/ or https://cwienczek.com/2020/06/simple-backup-of-postgres-database-in-kubernetes/ for Kubernetes
+
+
+## Upgrading
+
+This release does not introduce any new requirements.
+
+### docker-compose
+
+Download the docker-compose file for 2022.2 from [here](https://goauthentik.io/version/2022.2/docker-compose.yml). Afterwards, simply run `docker-compose up -d`.
+
+The previous backup directory will persist, and can still be used with other tools.
+
+### Kubernetes
+
+Update your values to use the new images:
+
+```yaml
+image:
+  repository: ghcr.io/goauthentik/server
+  tag: 2022.2.1
+```
+
+Backup-related settings can be removed but will not cause any errors either.