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Docker Compose Environment Variable Not Set in Dockerfile - Resolve 'index.lock File Exists' in SourceTree-Docker Desktop Firewall Block: Engine Stopped Troubleshooting

2026-07-28 17:05:59
Docker Compose Environment Variable Not Set in Dockerfile - Resolve 'index.lock File Exists' in SourceTree-Docker Desktop Firewall Block: Engine Stopped Troubleshooting

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

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