Update docker-external-proxy.md

Author: zerox80

docs/admin/getting-started/container/docker-compose/docker-external-proxy.md

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-sidebar_position: 2
-id: external-proxy
-title: Behind External Proxy
-description: How to run OpenCloud behind an external Nginx proxy with Certbot (manual setup).
-draft: false
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 # Running OpenCloud Behind an External Proxy (Nginx + Certbot Setup)
 
 This guide walks you through setting up OpenCloud behind an external Nginx reverse proxy with Let's Encrypt certificates using `certbot certonly --webroot`.