Software comparisons, alternatives, and tool decision notes.

Fix Docker Compose Environment Variable Default Value Not Used

You define a default value for an environment variable in your docker-compose.yml file, but when ...

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Fix DNS Probe Finished NXDOMAIN with VPN Issues

When you see 'DNS probe finished NXDOMAIN' in your browser while a VPN is active, it mean...

Fix Cloudflare Wildcard Subdomain Not Resolving

You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) expecting all s...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

npm run build Failed: Troubleshooting Checklist

When npm run build fails, the error message can be cryptic. This checklist walks thr...