website/docs: maintenance, re-add system settings

[BeryJu]

Details

Re-add docs removed in #8976 so we can reference them

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Checklist

• Local tests pass (ak test authentik/)
• The code has been formatted (make lint-fix)

If an API change has been made

• The API schema has been updated (make gen-build)

If changes to the frontend have been made

• The code has been formatted (make web)

If applicable

• The documentation has been updated
• The documentation has been formatted (make website)

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[authentik-automation]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 39%, saving 1.09 MB.

Filename	Before	After	Improvement	Visual comparison
website/static/img/screen_admin_dark.jpg	286.34 KB	178.42 KB	-37.7%	View diff
website/static/img/screen_admin_light.jpg	304.49 KB	190.70 KB	-37.4%	View diff
website/static/img/screen_apps_dark.jpg	171.65 KB	100.48 KB	-41.5%	View diff
website/static/img/screen_apps_light.jpg	206.03 KB	121.97 KB	-40.8%	View diff
website/static/img/screen_flow_dark.jpg	943.31 KB	574.64 KB	-39.1%	View diff
website/static/img/screen_flow_light.jpg	944.55 KB	575.93 KB	-39.0%	View diff

144 images did not require optimisation.

[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-ghcr.io/goauthentik/dev-server:gh-8166874a86a07d3bfdebe0234895af76cbb46d8a
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

For arm64, use these values:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-ghcr.io/goauthentik/dev-server:gh-8166874a86a07d3bfdebe0234895af76cbb46d8a-arm64
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
image:
    repository: ghcr.io/goauthentik/dev-server
    tag: gh-ghcr.io/goauthentik/dev-server:gh-8166874a86a07d3bfdebe0234895af76cbb46d8a

For arm64, use these values:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
image:
    repository: ghcr.io/goauthentik/dev-server
    tag: gh-ghcr.io/goauthentik/dev-server:gh-8166874a86a07d3bfdebe0234895af76cbb46d8a-arm64

Afterwards, run the upgrade commands from the latest release notes.