website/integrations: add outline knowledge base (#8786)

* website/integrations: add outline knowledge base

* Update website/integrations/services/outline/index.md

Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>

* Update website/integrations/services/outline/index.md

Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>

* Update website/integrations/services/outline/index.md

Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>

* Update website/integrations/services/outline/index.md

Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>

* Update website/integrations/services/outline/index.md

Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>
Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>

* add outline to sitebar

---------

Signed-off-by: Timo Zimmermann <timo@screamingatmyscreen.com>
Co-authored-by: Tana M Berry <tanamarieberry@yahoo.com>

website/integrations/services/outline/index.md

@@ -0,0 +1,49 @@
+---
+title: Outline
+---
+
+<span class="badge badge--secondary">Support level: Community</span>
+
+## What is Outline
+
+> Your team's knowledge base.
+> Lost in a mess of Docs? Never quite sure who has access? Colleagues requesting the same information repeatedly in chat? It’s time to get your team’s knowledge organized.
+>
+> -- https://www.getoutline.com
+
+## Preparation
+
+The following placeholders will be used:
+
+-   `outline.company` is the FQDN of the Outline install.
+-   `authentik.company` is the FQDN of the authentik install.
+
+
+## authentik configuration
+
+1. Create an OAuth2/OpenID provider with the following parameters:
+
+-   Client Type: `Confidential`
+-   Scopes: OpenID, Email and Profile
+-   Signing Key: Select any available key
+-   Redirect URIs: `https://outline.company/auth/oidc.callback`
+
+2. Note the Client ID and Client Secret values.
+
+## Outline configuration
+
+You need to set the following `env` variables for Docker-based installations.
+
+1. Set the following values:
+
+```yaml
+OIDC_CLIENT_ID=
+OIDC_CLIENT_SECRET=
+OIDC_AUTH_URI=https://authentik.company/application/o/authorize/
+OIDC_TOKEN_URI=https://authentik.company/application/o/token/
+OIDC_USERINFO_URI=https://authentik.company/application/o/userinfo/
+OIDC_LOGOUT_URI=https://authentik.company/application/o/wiki/end-session/
+OIDC_USERNAME_CLAIM=preferred_username
+OIDC_DISPLAY_NAME=authentik
+OIDC_SCOPES=openid profile email
+```

website/sidebarsIntegrations.js

@@ -29,6 +29,7 @@ module.exports = {
                         "services/mobilizon/index",
                         "services/nextcloud/index",
                         "services/onlyoffice/index",
+                        "services/outline/index",
                         "services/paperless-ng/index",
                         "services/paperless-ngx/index",
                         "services/rocketchat/index",