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Fix 'git pull failed index.lock file exists' Error - Resolve Docker Nginx 502 Error by Adjusting Container Memory-How to Check Cloudflare DNS Propagation Status

2026-07-28 11:17:47
Fix 'git pull failed index.lock file exists' Error - Resolve Docker Nginx 502 Error by Adjusting Container Memory-How to Check Cloudflare DNS Propagation Status

Result check

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

Next references

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