Knowledge base for software setup, errors, and daily tool work.

Docker Container Exits Immediately: Fix with Restart Policy

You start a Docker container, it runs for a second, then stops. No error messages, just a quick e...

How to Fix Cloudflare 521 Error with Wildcard Subdomains

If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...

Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode

When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome while running in Safe Mod...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix VS Code Breakpoint Not Hit in Remote Development

You set a breakpoint in VS Code while working in a remote environment—SSH, container, or WSL—but ...

Fix Git Authentication Failed in VS Code on Linux

You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...