adds pseudo.cortex.consider-funding.de upstream, adds snippet for easy oauth2-proxy protect, moves oauth2-proxy secrets to .env file

docker_compose_applications/reverse-proxy/Caddyfile

@@ -1,13 +1,37 @@
-pdf.consider-it.de {
-    reverse_proxy oauth2-proxy:4180
+(oauth2_protect) {
+	handle /oauth2/* {
+		reverse_proxy oauth2-proxy:4180
+	}
+
+	handle {
+		forward_auth oauth2-proxy:4180 {
+			uri /oauth2/auth
+			copy_headers Authorization
+
+			@bad status 4xx
+			handle_response @bad {
+				redir https://{args.0}/oauth2/start
+			}
+		}
+
+		reverse_proxy {args.1}
+	}
 }
 
-metabase.consider-it.de {
-    reverse_proxy metabase:3000
+pseudo.cortex.consider-funding.de {
+	import oauth2_protect pseudo.cortex.consider-funding.de http://10.20.0.2:5000
+}
+
+pdf.consider-it.de {
+	import oauth2_protect pdf.consider-it.de http://stirling-pdf:8080
 }
 
 n8n.consider-funding.de {
-    reverse_proxy n8n:5678 {
-        flush_interval -1
-    }
+	reverse_proxy n8n:5678 {
+		flush_interval -1
+	}
+}
+
+metabase.consider-it.de {
+	reverse_proxy metabase:3000
 }