Workflow manuals for setup steps, repeatable tasks, and software operations.

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix Git Push Rejected Non Fast Forward Error

You try to push your local commits to a remote repository and get: ! [rejected] —

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

Symptom

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

Fix Docker 'No Space Left on Device' from Log Files

You try to start a container or pull an image and get no space left on device. Often...

Resolving Python Dependency Conflicts in Docker Containers

You build a Docker image, run the container, and Python crashes with an ImportError or a version ...