update 2025-04-06

Changes:
- fix README.md old json format usage
- rename "redirect" option to "proxy_pass"
- move docker-compose.yml and nginx.conf.j2 to examples and add to .gitignore
- fix situation when one domain from domains.txt and servers.yaml appeared twice in nginx.conf

.gitignore

@@ -1,4 +1,7 @@
 /nginx/domains.txt
-/nginx/servers.json
 /nginx/servers.yaml
+/nginx/nginx.conf.j2
+/nginx.conf
 *.env
+/.venv
+/docker-compose.y*ml