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Fix Docker Build Context Canceled in VS Code - How to Fix 'Port Already Allocated' in Docker Compose-npm run build Exit Code 1 Troubleshooting Guide

Updated 2026-07-28 11:32:40browser-issues
Fix Docker Build Context Canceled in VS Code - How to Fix 'Port Already Allocated' in Docker Compose-npm run build Exit Code 1 Troubleshooting Guide
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.