Caddy on SQP Dev

Adding HTTPS with Caddy and DuckDNS

Sun, 10 May 2026 00:00:00 +0000

After deploying the application to EC2, it initially worked only through:

http://EC2-IP

The next step was understanding how HTTPS is normally added.

I used:

Final setup:

https://dsuopd.duckdns.org

Internet
   ↓
Caddy
   ↓
localhost:3000
   ↓
Docker app container

The application container itself is no longer publicly exposed directly.

Sun, 10 May 2026 00:00:00 +0000

Today I deployed my first real full-stack application to AWS EC2.

The project is a hospital staff allocation system built with:

The most important thing was understanding how the different layers connect together.

Final architecture:

Browser
   ↓ HTTPS
DuckDNS
   ↓
Caddy reverse proxy
   ↓
Docker app container
   ↓
PostgreSQL container

The workflow looked like this: