Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/web-app-oauth2-proxy/templates/endpoint.conf.j2

@@ -0,0 +1,16 @@
+  {# Include OAuth2 Proxy #}
+  {# Raise the maximal header size. #}
+  {# Keycloak uses huge headers for authentification #}
+  proxy_buffer_size 16k;
+  proxy_buffers 8 16k;
+  proxy_busy_buffers_size 16k;
+  large_client_header_buffers 4 16k;
+
+  # OAuth2-Proxy-Endpoint
+  location /oauth2/ {
+      proxy_pass http://127.0.0.1:{{ports.localhost.oauth2_proxy[application_id]}};
+      proxy_set_header Host $host;
+      proxy_set_header X-Real-IP $remote_addr;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+      proxy_set_header X-Forwarded-Proto $scheme;
+  }