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

Recover Lost Changes After Git Detached HEAD

You've made several edits, then checked out an old commit or tag, and now Git says you're...

How to Fix Git Refusing to Merge Unrelated Histories

When you try to merge two Git branches that have no common commit history, Git stops you with the...

Fix npm run build Failed on macOS: Common Causes and Solutions

If you're on macOS and npm run build fails, you're not alone. This command o...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Fixing Nginx 502 Bad Gateway in Docker WordPress Setups

If you're running WordPress in Docker behind an Nginx reverse proxy, a 502 Bad Gateway error ...

How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

If you need all subdomains (e.g., *.example.com) to point to the same IP or service, a wildcard D...