Update auth.lua to use HTTP scheme and configure DNS resolver in nginx.conf

auth.lua

@@ -5,7 +5,7 @@ local opts = {
   discovery = "https://kc.boomlab.party/realms/rhein-sw/.well-known/openid-configuration",
   client_id = "demo-sso",
   client_secret = os.getenv("KEYCLOAK_CLIENT_SECRET"),
-  redirect_uri_scheme = "https",
+  redirect_uri_scheme = "http",
   scope = "openid email profile"
 }
 

nginx.conf

@@ -5,6 +5,8 @@ events {
 }
 
 http {
+  resolver 192.168.21.2 ipv6=off;
+
   lua_package_path "/usr/local/openresty/lualib/?.lua;;";
 
   lua_shared_dict discovery 1m;