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/pihole/.helmignore b/charts/pihole/.helmignore
index 0e8a0eb..4c2748c 100644
--- a/charts/pihole/.helmignore
+++ b/charts/pihole/.helmignore
@@ -14,10 +14,14 @@
 *.swp
 *.bak
 *.tmp
-*.orig
 *~
 # Various IDEs
 .project
 .idea/
 *.tmproj
-.vscode/
+
+# Manually added entries
+ci/
+examples/
+Makefile
+README.md.gotmpl