Workflow manuals for setup steps, repeatable tasks, and software operations.

Fix Nginx 502 Bad Gateway in Docker Containers

An Nginx 502 Bad Gateway error when proxying to a Docker container usually means Nginx cannot rea...

Using nvm to Switch Node Version for a Specific Package

You might find that a package fails to install or run because it requires a specific Node.js vers...

Fix Docker Container Exits Immediately in Background Mode

You run a Docker container with -d (detached mode) and it exits immediately. The con...

Cloudflare Origin Certificate Not Showing in Dashboard: Fix

If you've generated a Cloudflare origin certificate but it doesn't appear in your dashboa...

Fix Cloudflare 522 Error with Nginx Configuration

You're seeing a Cloudflare 522 error: connection timed out between Cloudflare and your origin...

Checklist for Troubleshooting Nginx Permission Denied Errors

Understanding the Problem

When Nginx returns a 403 Forbidden or logs an error like ...