Code of Duty

Sep 2, 2026 · Operations

SSL Certificate Deployment: From Application to Nginx Configuration in Docker

This tutorial walks through the complete SSL certificate lifecycle: purchasing a free test certificate on Alibaba Cloud, validating domain ownership via DNS TXT records, downloading Nginx-formatted certificate files, configuring Nginx inside a Docker container with proper volume mounts, testing configuration with nginx -t, opening port 443, and verifying HTTPS redirect from HTTP.