Checklists for software errors, setup, and tool workflows.

Fix Nginx 502 Bad Gateway with Docker Environment Variables

If you see a 502 Bad Gateway from nginx running in Docker, it usually means ngin...

Fix VSCode Git Authentication Failure with Bitbucket

You're working in Visual Studio Code, you try to push or pull from a Bitbucket repository, an...

Docker Container Exits Immediately with Exit Code 137

You start a Docker container, and it exits almost immediately with exit code 137. This usually me...

Fix VS Code Breakpoints Not Hit in C++: Practical Checks

You set a breakpoint in VS Code while debugging a C++ program, but execution never stops there. T...

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

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

fatal: Unable to create &#...