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Fix Nginx 502 Bad Gateway in Docker Containers - Fix Cloudflare Wildcard Subdomain and Root Domain Conflict-Troubleshooting Python Virtual Environment Activation Failure

2026-07-28 09:48:10
Fix Nginx 502 Bad Gateway in Docker Containers - Fix Cloudflare Wildcard Subdomain and Root Domain Conflict-Troubleshooting Python Virtual Environment Activation Failure

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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