website/docs: Add Integrations/Provider/Gitea (#1781)

website/docs/integrations/services/gitea/index.md

@@ -0,0 +1,67 @@
+---
+title: Gitea
+---
+
+## What is Gitea
+
+From https://gitea.io/
+
+:::note
+Gitea is a community managed lightweight code hosting solution written in Go. It is published under the MIT license.
+:::
+
+:::note
+This is based on authentik 2021.10.3 and Gitea 1.15.6 installed using https://docs.gitea.io/en-us/install-from-binary/. Instructions may differ between versions.
+:::
+
+## Preparation
+
+The following placeholders will be used:
+
+- `authentik.company` is the FQDN of authentik.
+- `gitea.company` is the FQDN of Gitea.
+
+### Step 1
+
+In authentik, create an _OAuth2/OpenID Provider_ (under _Resources/Providers_) with these settings:
+
+:::note
+Only settings that have been modified from default have been listed.
+:::
+
+**Protocol Settings**
+- Name: Gitea
+- RSA Key: authentik Self-signed certificate
+
+:::note
+Take note of the `Client ID` and `Client Secret` you'll need to give them to Gitea in _Step 3_.
+:::
+
+### Step 2
+
+In authentik, create an application (under _Resources/Applications_) which uses this provider. Optionally apply access restrictions to the application using policy bindings.
+
+:::note
+Only settings that have been modified from default have been listed.
+:::
+
+- Name: Gitea
+- Slug: gitea-slug
+- Provider: Gitea
+
+### Step 3
+
+Navigate to the _Authentication Sources_ page at https://gitea.company/admin/auths and click `Add Authentication Source`
+
+Change the following fields
+
+- Authentication Name: authentik
+- OAuth2 Provider: OpenID Connect
+- Client ID (Key): Step 2
+- Client Secret: Step 2
+- Icon URL: https://raw.githubusercontent.com/goauthentik/authentik/master/web/icons/icon.png
+- OpenID Connect Auto Discovery URL: https://authentik.company/application/o/gitea-slug/.well-known/openid-configuration
+
+![](./gitea1.png)
+
+`Add Authentication Source` and you should be done. Your Gitea login page should now have a `Sign in With` followed by the Gitea logo which you can click on to sign-in with Gitea.

website/sidebars.js

@@ -94,6 +94,7 @@ module.exports = {
                         "integrations/services/aws/index",
                         "integrations/services/awx-tower/index",
                         "integrations/services/bookstack/index",
+                        "integrations/services/gitea/index",
                         "integrations/services/gitlab/index",
                         "integrations/services/grafana/index",
                         "integrations/services/harbor/index",