Checklists for software errors, setup, and tool workflows.

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Docker Compose Port Already Allocated: Checklist

You run docker-compose up and get an error like Error starting userland proxy:...

Docker Container Exits Immediately: No Error, Common Fixes
You run docker run and the container starts, then exits within a second. No error me...

Fix Git 'index.lock' Error in VS Code
If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Fix Nginx Redirect Loop Caused by Rewrite Rules
Redirect loops in Nginx often appear as endless redirects between two URLs or as a browser error ...

Docker Compose Environment Variable from Shell Not Working: Fixes
You set an environment variable in your shell, but Docker Compose ignores it. This is a common pi...

How to Fix Firefox Secure Connection Failed Certificate Error
You see a full-page error in Firefox: Secure Connection Failed with a message li...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Docker Compose Port Already Allocated: Checklist

Docker Container Exits Immediately: No Error, Common Fixes

Fix Git 'index.lock' Error in VS Code

Fix Nginx Redirect Loop Caused by Rewrite Rules

Docker Compose Environment Variable from Shell Not Working: Fixes

How to Fix Firefox Secure Connection Failed Certificate Error

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