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....
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Chrome Access Violation Error on Mac
If you see an "access violation" error in Chrome on your Mac, it usually means the browse...
Python Virtual Environment Not Activating on Mac: Fixes
You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...
Fix Git SSL Certificate Problem on macOS: Unable to Get Local Issuer
If you're seeing fatal: unable to access 'https://...': SSL certificate problem...
Fix VS Code Source Control Not Detecting Changes in Subfolder
You open VS Code, see changes in the root folder, but the Source Control panel shows nothing for ...
Fix 'Python Command Not Found' in Anaconda on Windows
If you installed Anaconda on Windows but typing python in Command Prompt returns
Topic paths
Quick titles
Why Your Docker Container Exits Immediately and How to Fix ItNginx -t Test Failure: Troubleshooting ChecklistHow to Fix Windows Update Service Not Running Due to MalwarebytesStep-by-Step Guide for 0x800f081f Windows UpdateDNS_PROBE_FINISHED_NXDOMAIN: ipconfig flushdns Not WorkingResolve Git index.lock File Exists ErrorFix Stuck Git Lock File ErrorReset Network Settings in Windows 11 Using Netsh Commands