auth-proxy: proxies only authenticated requests to upstream, redirects to login page otherwise (#103)

* auth-proxy: inspects authenticated user

* ingress: chart and use in rpuppy

* auth-proxy: make it optional in rpuppy

* kratos: whitelist env pub/priv domains for auth return_to addr

* url-shortener: put behind auth-proxy

* pihole: replace oauth2-client with auth-proxy

* auth-proxy: fix upstream uri generation

* pihole: remove old chart using oauth2

* auth-proxy: remove temporary values file

* url-shortener: check x-user header for authentication

* auth: fix allowed_return_urls list

* auth-proxy: fix current address generation logic

---------

Co-authored-by: Giorgi Lekveishvili <lekva@gl-mbp-m1-max.local>
diff --git a/charts/url-shortener/values.yaml b/charts/url-shortener/values.yaml
index a62dc10..3b0d837 100644
--- a/charts/url-shortener/values.yaml
+++ b/charts/url-shortener/values.yaml
@@ -1,11 +1,7 @@
 image:
   repository: giolekva/url-shortener
-  name: url-shortener
   tag: latest
   pullPolicy: Always
-ingressClassName: ingress-public
-certificateIssuer: example-public
-domain: url-shortener.example.com
 storage:
   size: 1Gi
-port: 8080
+portName: http