Secure Docker Deployment on Synology NAS

The client needed the system (he built it using Replit) deployed on their own Synology NAS, secured with SSL, exposed via a custom domain without relying on cloud hosting.

The challenge wasn’t just Docker deployment. The environment included Synology’s Web Station, built-in Nginx, DSM services, firewall rules, router port forwarding, and container networking all of which needed to work together cleanly.

I handled the full deployment end-to-end: Docker configuration, networking, reverse proxy, HTTPS, domain routing, and live verification. After isolating the root cause (a Web Station port conflict silently intercepting traffic), I resolved the issue and delivered a stable, externally accessible system.

The final setup exposes the API securely over HTTPS, passes health checks both internally and externally, and is ready for third-party integrations like QuickBooks and Pipedrive.