Knowledge base for software setup, errors, and daily tool work.

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...

Cloudflare DNS Not Propagating to All Nameservers: Common Fixes

You changed a DNS record in Cloudflare, but some resolvers still show the old value while others ...

Fix Docker Pull Access Denied in CI/CD Pipeline

When a CI/CD pipeline fails with denied: requested access to the resource is denied ...

Fix Git 'index.lock' Error in VS Code

If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Fix Git Push Rejected Non Fast Forward Error