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

Docker Desktop Engine Stopped: Fix Firewall Block

If Docker Desktop shows “Engine Stopped” and you suspect a firewall block, here’s how to diagnose...

Docker Container Exits Immediately on Windows: How to Fix

You start a Docker container on Windows, and it stops within seconds. The container exits immedia...

Docker Container Exits Immediately in Docker Compose

If your Docker container exits immediately after starting with docker compose up, it...

How to Check Docker Disk Space Usage

If you run Docker for a while, you may notice your disk space shrinking. Images, containers, volu...

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...

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...