Checklists for software errors, setup, and tool workflows.

Docker Container Exits Immediately on Linux: Fixes

You start a Docker container, but it exits immediately. This is a common issue on Linux. The cont...

Fix VS Code Git Authentication Failed Keychain Error

If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

How to Clear DNS Cache to Fix ERR_NAME_NOT_RESOLVED

You try to visit a website, but Chrome shows ERR_NAME_NOT_RESOLVED or your brows...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...

How to Fix Nginx 502 Bad Gateway in Docker Compose

If you're running an application with Docker Compose and Nginx as a reverse proxy, a 502 Bad ...

Fix npm run build Failed with PostCSS Error

You run npm run build and see a PostCSS error. This often happens after updating pac...