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Docker Compose: Fix 'Port Already in Use on Host' Error - Fix Python Venv Not Activating in PowerShell-Fix Docker 'network not found' Error for Custom Networks

Updated 2026-07-28 11:31:48developer-tools
Docker Compose: Fix 'Port Already in Use on Host' Error - Fix Python Venv Not Activating in PowerShell-Fix Docker 'network not found' Error for Custom Networks
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.