configure open webui to use sso from authentik

apps/openwebui/release.yaml

@@ -44,3 +44,30 @@ spec:
       persistence:
         enabled: true
         existingClaim: openwebui-pipelines-lvmhdd
+
+    # SSO with Authentik
+    extraEnvVars:
+      - name: WEBUI_URL
+        value: "https://openwebui.lumpiasty.xyz"
+      - name: OAUTH_CLIENT_ID
+        valueFrom:
+          secretKeyRef:
+            name: openwebui-authentik
+            key: client_id
+      - name: OAUTH_CLIENT_SECRET
+        valueFrom:
+          secretKeyRef:
+            name: openwebui-authentik
+            key: client_secret
+      - name: OAUTH_PROVIDER_NAME
+        value: "authentik"
+      - name: OPENID_PROVIDER_URL
+        value: "https://authentik.lumpiasty.xyz/application/o/open-web-ui/.well-known/openid-configuration"
+      - name: OPENID_REDIRECT_URI
+        value: "https://openwebui.lumpiasty.xyz/oauth/oidc/callback"
+      - name: ENABLE_OAUTH_SIGNUP
+        value: "true"
+      - name: ENABLE_LOGIN_FORM
+        value: "false"
+      - name: OAUTH_MERGE_ACCOUNTS_BY_EMAIL
+        value: "true"