Checklists for software errors, setup, and tool workflows.

Docker Compose Environment Variable Not Set in Dockerfile

You set an environment variable in your docker-compose.yml file, but when you try to...

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

Symptom

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

Docker Compose Environment Variable Override Not Working: Fixes & Checks

You set an environment variable in your shell or .env file, but Docker Compose ignor...

Fix Node Sass Build Failed with Visual Studio Build Tools

When you see node-sass build failed during an npm install, it usually means the nati...

Fix Cloudflare 521 Error: DNS Configuration Problem

If you see a Cloudflare 521 error page, it means Cloudflare's servers are unable to connect t...

Fix Git Clone Connection Timed Out Due to Firewall

You run git clone and after a long pause see connection timed out. This...