docs: Added okta dex oidc example (#1281)

Author: bruno-espino

docs/images/self-hosted/dex-okta-oidc-app.png

@@ -14,16 +14,18 @@ For Azure, we recommend creating an [OpenID connector](https://dexidp.io/docs/co
 
 - Follow the steps to create the Azure App at [Azure Docs](https://learn.microsoft.com/en-us/power-pages/security/authentication/openid-settings#create-an-app-registration-in-azure)
 
-    - Make sure to set the RedirectURI to ```<logfire_url>/auth-api/callback```
+    - Make sure to set the **RedirectURI** to ```<logfire_url>/auth-api/callback```
     - Make sure to copy the secret value when you create it
 
 - To finish the configuration on your Helm values file, you will need:
-    - Directory (Tenant) ID and     Application (client) ID, you can get both of these from the Azure App overview page
+    - Directory (Tenant) ID and  Application (client) ID, you can get both of these from the Azure App overview page
     - The client secret value you copied on the previous step
 
 It should look something like this:
 ```yaml
-    connectors:
+    logfire-dex:
+    ...
+      connectors:
       - type: oidc
         id: azuread
         name: Microsoft
@@ -53,16 +55,49 @@ For GitHub you can use the [GitHub connector](https://dexidp.io/docs/connectors/
 
 - On your values file:
     ```yaml
-        logfire-dex:
-        ...
+      logfire-dex:
+      ...
         config:
-            connectors:
-            - type: "github"
-                id: "github"
-                name: "GitHub"
-                config:
-                # You get clientID and clientSecret by creating a GitHub OAuth App
-                # See https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/creating-an-oauth-app
-                clientID: client_id
-                clientSecret: client_secret
+          connectors:
+          - type: github
+            id: github
+            name: GitHub
+            config:
+              # You get clientID and clientSecret by creating a GitHub OAuth App
+              # See https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/creating-an-oauth-app
+              clientID: client_id
+              clientSecret: client_secret
+    ```
+
+### Okta
+
+we recommend creating an [OpenID connector](https://dexidp.io/docs/connectors/oidc/).
+
+- Follow the steps for creating an OIDC Okta App at [Okta Docs](https://help.okta.com/en-us/content/topics/apps/apps_app_integration_wizard_oidc.htm)
+    - Set **Web Application** as the Application type
+    - Set **Sign-in redirect URIs** to ```<logfire_url>/auth-api/callback```
+
+    ![Okta OIDC App](../../images/self-hosted/dex-okta-oidc-app.png)
+
+- After creating the app:
+    - Copy the Client ID from the **General** tab
+    - Copy the Secret value
+    - Go to the **Sign On** tab, click **Edit** at the **OpenID Connect ID Token** section and change **Issuer** from **Dynamic** to **Okta URL**, then copy the URL
+
+    ![Okta OIDC App2](../../images/self-hosted/dex-okta-oidc-app2.png)
+
+- Now, finish the configuration on your Helm values file, it should look something like this:
+    ```yaml
+      logfire-dex:
+      ...
+        config:
+          connectors:
+          - type: oidc
+            id: okta
+            name: Okta
+            config:
+              issuer: <Issuer_URL> ### This is the URL from the Sign On tab
+              clientID: <Client ID>
+              clientSecret: <Client Secret Value>
+              insecureSkipEmailVerified: true
     ```