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Docker Container Exits Immediately in Docker Compose - Cloudflare 521 Error: Origin Server Unreachable Fix-Fix Nginx Redirect Loop: Permanent Solutions

2026-07-28 06:06:38
Docker Container Exits Immediately in Docker Compose - Cloudflare 521 Error: Origin Server Unreachable Fix-Fix Nginx Redirect Loop: Permanent Solutions

Result check

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

Next references

Fix Docker 'network not found' Error for Bridge DriverHow to Fix Node Sass Build Failed ErrorFix Nginx Configuration Test Failure in DockerCloudflare SSL Full Strict Setup GuideFix Nginx 502 Bad Gateway on Docker UbuntuFix Nginx Permission Denied for SSL Certificate Files