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Fix Git 'index.lock file exists' Error - Docker Compose: Fix 'Port Already in Use on Host' Error-Git Push Rejected: Non-Fast-Forward and Permission Denied Fixes

2026-07-29 03:53:08
Fix Git 'index.lock file exists' Error - Docker Compose: Fix 'Port Already in Use on Host' Error-Git Push Rejected: Non-Fast-Forward and Permission Denied Fixes

Result check

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