Fixing Nginx 502 Bad Gateway in Docker: Practical Steps
You set up Nginx as a reverse proxy in Docker, but instead of your app you see a 502 Bad Gateway....
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix npm install Permission Denied in VS Code Terminal
When you run npm install in the VS Code terminal and get a permission denied error, ...
Windows Update Service Missing from Services.msc: Fixes
If you open Services.msc and the Windows Update service (wuauserv) is not listed, automatic updat...
Docker Compose Environment Variable Not Updating? Fix It
You update a variable in your docker-compose.yml or .env file, run
Fix 'git remote origin already exists' Error on Mac
If you see fatal: remote origin already exists when trying to add a remote repositor...
Cloudflare Wildcard Subdomain CNAME Setup Guide
If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...
Issue queue
SitemapFixing Nginx Permission Denied for Access Log
How to Resolve Git Merge Conflicts on the Same Line
How to Resolve npm Install Permission Denied on Linux
Troubleshooting Nginx 502 in Docker Multi-Container Environments
Bluetooth Not Working on Windows 11 Checklist
Fix 'sass not found' in Node Sass Builds
How to Create a Docker Network If Not Found
How to Stop Docker Container from Exiting Immediately
Fix 'Git Remote Origin Already Exists' Error
Windows 11 Wi-Fi No Internet? Try Disabling IPv6
Nginx Upstream Not Found Error Fix
How to Solve npm Permission Errors on Shared Hosting
How to Resolve Git Merge Conflicts on the Same Line
How to Resolve npm Install Permission Denied on Linux
Troubleshooting Nginx 502 in Docker Multi-Container Environments
Bluetooth Not Working on Windows 11 Checklist
Fix 'sass not found' in Node Sass Builds
How to Create a Docker Network If Not Found
How to Stop Docker Container from Exiting Immediately
Fix 'Git Remote Origin Already Exists' Error
Windows 11 Wi-Fi No Internet? Try Disabling IPv6
Nginx Upstream Not Found Error Fix
How to Solve npm Permission Errors on Shared Hosting